diff --git a/docs/docs/usage/dependency.md b/docs/docs/usage/dependency.md
index f0f850073f..7b26952af6 100644
--- a/docs/docs/usage/dependency.md
+++ b/docs/docs/usage/dependency.md
@@ -171,6 +171,10 @@ There are two similar commands to do this job with a slight difference:
 - `pdm sync` installs dependencies in the lock file and will error out if it doesn't exist.
   Besides, `pdm sync` can also remove unneeded packages if `--clean` option is given.
 
+## Specify the lockfile to use
+
+You can specify another lockfile than the default `pdm.lock` by using the `-L/--lockfilie <filepath>` option or the `PDM_LOCKFILE` environment variable.
+
 ### Select a subset of dependencies with CLI options
 
 Say we have a project with following dependencies:
diff --git a/news/1038.feature.md b/news/1038.feature.md
new file mode 100644
index 0000000000..07104d7033
--- /dev/null
+++ b/news/1038.feature.md
@@ -0,0 +1 @@
+Allow specifying lockfile other than `pdm.lock` by `--lockfile` option or `PDM_LOCKFILE` env var.
diff --git a/pdm/cli/commands/add.py b/pdm/cli/commands/add.py
index cc5369afd7..ce8a8c0c54 100644
--- a/pdm/cli/commands/add.py
+++ b/pdm/cli/commands/add.py
@@ -5,6 +5,7 @@
 from pdm.cli.options import (
     dry_run_option,
     install_group,
+    lockfile_option,
     packages_group,
     prerelease_option,
     save_strategy_group,
@@ -19,6 +20,7 @@ class Command(BaseCommand):
     """Add package(s) to pyproject.toml and install them"""
 
     arguments = BaseCommand.arguments + [
+        lockfile_option,
         save_strategy_group,
         update_strategy_group,
         prerelease_option,
diff --git a/pdm/cli/commands/export.py b/pdm/cli/commands/export.py
index 4fbe5b4ec9..847b8cb471 100644
--- a/pdm/cli/commands/export.py
+++ b/pdm/cli/commands/export.py
@@ -6,7 +6,7 @@
 
 from pdm.cli.actions import resolve_candidates_from_lockfile
 from pdm.cli.commands.base import BaseCommand
-from pdm.cli.options import groups_group
+from pdm.cli.options import groups_group, lockfile_option
 from pdm.cli.utils import translate_groups
 from pdm.formats import FORMATS
 from pdm.models.candidates import Candidate
@@ -18,6 +18,7 @@ class Command(BaseCommand):
     """Export the locked packages set to other formats"""
 
     def add_arguments(self, parser: argparse.ArgumentParser) -> None:
+        lockfile_option.add_to_parser(parser)
         parser.add_argument(
             "-f",
             "--format",
diff --git a/pdm/cli/commands/install.py b/pdm/cli/commands/install.py
index 53edfb158e..586c257b70 100644
--- a/pdm/cli/commands/install.py
+++ b/pdm/cli/commands/install.py
@@ -7,7 +7,7 @@
 from pdm.cli import actions
 from pdm.cli.commands.base import BaseCommand
 from pdm.cli.commands.run import run_script_if_present
-from pdm.cli.options import dry_run_option, groups_group, install_group
+from pdm.cli.options import dry_run_option, groups_group, install_group, lockfile_option
 from pdm.project import Project
 
 
@@ -18,6 +18,7 @@ def add_arguments(self, parser: argparse.ArgumentParser) -> None:
         groups_group.add_to_parser(parser)
         install_group.add_to_parser(parser)
         dry_run_option.add_to_parser(parser)
+        lockfile_option.add_to_parser(parser)
         parser.add_argument(
             "--no-lock",
             dest="lock",
diff --git a/pdm/cli/commands/lock.py b/pdm/cli/commands/lock.py
index f228bd2b41..e9c4a8d9a8 100644
--- a/pdm/cli/commands/lock.py
+++ b/pdm/cli/commands/lock.py
@@ -4,14 +4,14 @@
 from pdm.cli import actions
 from pdm.cli.commands.base import BaseCommand
 from pdm.cli.commands.run import run_script_if_present
-from pdm.cli.options import no_isolation_option
+from pdm.cli.options import lockfile_option, no_isolation_option
 from pdm.project import Project
 
 
 class Command(BaseCommand):
     """Resolve and lock dependencies"""
 
-    arguments = BaseCommand.arguments + [no_isolation_option]
+    arguments = BaseCommand.arguments + [lockfile_option, no_isolation_option]
 
     def add_arguments(self, parser: argparse.ArgumentParser) -> None:
         parser.add_argument(
diff --git a/pdm/cli/commands/remove.py b/pdm/cli/commands/remove.py
index fde51f24a8..8dfd65dd59 100644
--- a/pdm/cli/commands/remove.py
+++ b/pdm/cli/commands/remove.py
@@ -2,7 +2,7 @@
 
 from pdm.cli import actions
 from pdm.cli.commands.base import BaseCommand
-from pdm.cli.options import dry_run_option, install_group
+from pdm.cli.options import dry_run_option, install_group, lockfile_option
 from pdm.project import Project
 
 
@@ -12,6 +12,7 @@ class Command(BaseCommand):
     def add_arguments(self, parser: argparse.ArgumentParser) -> None:
         install_group.add_to_parser(parser)
         dry_run_option.add_to_parser(parser)
+        lockfile_option.add_to_parser(parser)
         parser.add_argument(
             "-d",
             "--dev",
diff --git a/pdm/cli/commands/sync.py b/pdm/cli/commands/sync.py
index 76a4fbbb73..ca90f6dc2f 100644
--- a/pdm/cli/commands/sync.py
+++ b/pdm/cli/commands/sync.py
@@ -2,7 +2,13 @@
 
 from pdm.cli import actions
 from pdm.cli.commands.base import BaseCommand
-from pdm.cli.options import clean_group, dry_run_option, groups_group, install_group
+from pdm.cli.options import (
+    clean_group,
+    dry_run_option,
+    groups_group,
+    install_group,
+    lockfile_option,
+)
 from pdm.project import Project
 
 
@@ -12,6 +18,7 @@ class Command(BaseCommand):
     def add_arguments(self, parser: argparse.ArgumentParser) -> None:
         groups_group.add_to_parser(parser)
         dry_run_option.add_to_parser(parser)
+        lockfile_option.add_to_parser(parser)
         parser.add_argument(
             "-r",
             "--reinstall",
diff --git a/pdm/cli/commands/update.py b/pdm/cli/commands/update.py
index a6e03c9cef..0a73aaf965 100644
--- a/pdm/cli/commands/update.py
+++ b/pdm/cli/commands/update.py
@@ -5,6 +5,7 @@
 from pdm.cli.options import (
     groups_group,
     install_group,
+    lockfile_option,
     prerelease_option,
     save_strategy_group,
     unconstrained_option,
@@ -19,6 +20,7 @@ class Command(BaseCommand):
     arguments = BaseCommand.arguments + [
         groups_group,
         install_group,
+        lockfile_option,
         save_strategy_group,
         update_strategy_group,
         prerelease_option,
diff --git a/pdm/cli/completions/pdm.bash b/pdm/cli/completions/pdm.bash
index eee83d7253..47252eb840 100644
--- a/pdm/cli/completions/pdm.bash
+++ b/pdm/cli/completions/pdm.bash
@@ -29,7 +29,7 @@ _pdm_a919b69078acdf0a_complete()
         case "$com" in
 
             (add)
-            opts="--dev --dry-run --editable --global --group --help --no-editable --no-isolation --no-self --no-sync --prerelease --project --save-compatible --save-exact --save-minimum --save-wildcard --unconstrained --update-eager --update-reuse --verbose"
+            opts="--dev --dry-run --editable --global --group --help --lockfile --no-editable --no-isolation --no-self --no-sync --prerelease --project --save-compatible --save-exact --save-minimum --save-wildcard --unconstrained --update-eager --update-reuse --verbose"
             ;;
 
             (build)
@@ -49,7 +49,7 @@ _pdm_a919b69078acdf0a_complete()
             ;;
 
             (export)
-            opts="--dev --format --global --group --help --no-default --output --production --project --pyproject --verbose --without-hashes"
+            opts="--dev --format --global --group --help --lockfile --no-default --output --production --project --pyproject --verbose --without-hashes"
             ;;
 
             (import)
@@ -65,7 +65,7 @@ _pdm_a919b69078acdf0a_complete()
             ;;
 
             (install)
-            opts="--check --dev --dry-run --global --group --help --no-default --no-editable --no-isolation --no-lock --no-self --production --project --verbose"
+            opts="--check --dev --dry-run --global --group --help --lockfile --no-default --no-editable --no-isolation --no-lock --no-self --production --project --verbose"
             ;;
 
             (list)
@@ -73,7 +73,7 @@ _pdm_a919b69078acdf0a_complete()
             ;;
 
             (lock)
-            opts="--global --help --no-isolation --project --refresh --verbose"
+            opts="--global --help --lockfile --no-isolation --project --refresh --verbose"
             ;;
 
             (plugin)
@@ -81,7 +81,7 @@ _pdm_a919b69078acdf0a_complete()
             ;;
 
             (remove)
-            opts="--dev --dry-run --global --group --help --no-editable --no-isolation --no-self --no-sync --project --verbose"
+            opts="--dev --dry-run --global --group --help --lockfile --no-editable --no-isolation --no-self --no-sync --project --verbose"
             ;;
 
             (run)
@@ -97,11 +97,11 @@ _pdm_a919b69078acdf0a_complete()
             ;;
 
             (sync)
-            opts="--clean --dev --dry-run --global --group --help --no-clean --no-default --no-editable --no-isolation --no-self --production --project --reinstall --verbose"
+            opts="--clean --dev --dry-run --global --group --help --lockfile --no-clean --no-default --no-editable --no-isolation --no-self --production --project --reinstall --verbose"
             ;;
 
             (update)
-            opts="--dev --global --group --help --no-default --no-editable --no-isolation --no-self --no-sync --outdated --prerelease --production --project --save-compatible --save-exact --save-minimum --save-wildcard --top --unconstrained --update-eager --update-reuse --verbose"
+            opts="--dev --global --group --help --lockfile --no-default --no-editable --no-isolation --no-self --no-sync --outdated --prerelease --production --project --save-compatible --save-exact --save-minimum --save-wildcard --top --unconstrained --update-eager --update-reuse --verbose"
             ;;
 
             (use)
diff --git a/pdm/cli/completions/pdm.fish b/pdm/cli/completions/pdm.fish
index 33a256ff53..34e34499d3 100644
--- a/pdm/cli/completions/pdm.fish
+++ b/pdm/cli/completions/pdm.fish
@@ -49,6 +49,7 @@ complete -c pdm -A -n '__fish_seen_subcommand_from add' -l editable -d 'Specify
 complete -c pdm -A -n '__fish_seen_subcommand_from add' -l global -d 'Use the global project, supply the project root with `-p` option'
 complete -c pdm -A -n '__fish_seen_subcommand_from add' -l group -d 'Specify the target dependency group to add into'
 complete -c pdm -A -n '__fish_seen_subcommand_from add' -l help -d 'show this help message and exit'
+complete -c pdm -A -n '__fish_seen_subcommand_from add' -l lockfile -d 'Specify another lockfile path, or use `PDM_LOCKFILE` env variable. Default: pdm.lock'
 complete -c pdm -A -n '__fish_seen_subcommand_from add' -l no-editable -d 'Install non-editable versions for all packages'
 complete -c pdm -A -n '__fish_seen_subcommand_from add' -l no-isolation -d 'Do not isolate the build in a clean environment'
 complete -c pdm -A -n '__fish_seen_subcommand_from add' -l no-self -d 'Don\'t install the project itself'
@@ -96,6 +97,7 @@ complete -c pdm -A -n '__fish_seen_subcommand_from export' -l format -d 'Specify
 complete -c pdm -A -n '__fish_seen_subcommand_from export' -l global -d 'Use the global project, supply the project root with `-p` option'
 complete -c pdm -A -n '__fish_seen_subcommand_from export' -l group -d 'Select group of optional-dependencies or dev-dependencies(with -d). Can be supplied multiple times, use ":all" to include all groups under the same species.'
 complete -c pdm -A -n '__fish_seen_subcommand_from export' -l help -d 'show this help message and exit'
+complete -c pdm -A -n '__fish_seen_subcommand_from export' -l lockfile -d 'Specify another lockfile path, or use `PDM_LOCKFILE` env variable. Default: pdm.lock'
 complete -c pdm -A -n '__fish_seen_subcommand_from export' -l no-default -d 'Don\'t include dependencies from the default group'
 complete -c pdm -A -n '__fish_seen_subcommand_from export' -l output -d 'Write output to the given file, or print to stdout if not given'
 complete -c pdm -A -n '__fish_seen_subcommand_from export' -l production -d 'Unselect dev dependencies'
@@ -137,6 +139,7 @@ complete -c pdm -A -n '__fish_seen_subcommand_from install' -l dry-run -d 'Show
 complete -c pdm -A -n '__fish_seen_subcommand_from install' -l global -d 'Use the global project, supply the project root with `-p` option'
 complete -c pdm -A -n '__fish_seen_subcommand_from install' -l group -d 'Select group of optional-dependencies or dev-dependencies(with -d). Can be supplied multiple times, use ":all" to include all groups under the same species.'
 complete -c pdm -A -n '__fish_seen_subcommand_from install' -l help -d 'show this help message and exit'
+complete -c pdm -A -n '__fish_seen_subcommand_from install' -l lockfile -d 'Specify another lockfile path, or use `PDM_LOCKFILE` env variable. Default: pdm.lock'
 complete -c pdm -A -n '__fish_seen_subcommand_from install' -l no-default -d 'Don\'t include dependencies from the default group'
 complete -c pdm -A -n '__fish_seen_subcommand_from install' -l no-editable -d 'Install non-editable versions for all packages'
 complete -c pdm -A -n '__fish_seen_subcommand_from install' -l no-isolation -d 'Do not isolate the build in a clean environment'
@@ -159,6 +162,7 @@ complete -c pdm -A -n '__fish_seen_subcommand_from list' -l verbose -d '-v for d
 # lock
 complete -c pdm -A -n '__fish_seen_subcommand_from lock' -l global -d 'Use the global project, supply the project root with `-p` option'
 complete -c pdm -A -n '__fish_seen_subcommand_from lock' -l help -d 'show this help message and exit'
+complete -c pdm -A -n '__fish_seen_subcommand_from lock' -l lockfile -d 'Specify another lockfile path, or use `PDM_LOCKFILE` env variable. Default: pdm.lock'
 complete -c pdm -A -n '__fish_seen_subcommand_from lock' -l no-isolation -d 'Do not isolate the build in a clean environment'
 complete -c pdm -A -n '__fish_seen_subcommand_from lock' -l project -d 'Specify another path as the project root, which changes the base of pyproject.toml and __pypackages__'
 complete -c pdm -A -n '__fish_seen_subcommand_from lock' -l refresh -d 'Don\'t update pinned versions, only refresh the lock file'
@@ -174,6 +178,7 @@ complete -c pdm -A -n '__fish_seen_subcommand_from remove' -l dry-run -d 'Show t
 complete -c pdm -A -n '__fish_seen_subcommand_from remove' -l global -d 'Use the global project, supply the project root with `-p` option'
 complete -c pdm -A -n '__fish_seen_subcommand_from remove' -l group -d 'Specify the target dependency group to remove from'
 complete -c pdm -A -n '__fish_seen_subcommand_from remove' -l help -d 'show this help message and exit'
+complete -c pdm -A -n '__fish_seen_subcommand_from remove' -l lockfile -d 'Specify another lockfile path, or use `PDM_LOCKFILE` env variable. Default: pdm.lock'
 complete -c pdm -A -n '__fish_seen_subcommand_from remove' -l no-editable -d 'Install non-editable versions for all packages'
 complete -c pdm -A -n '__fish_seen_subcommand_from remove' -l no-isolation -d 'Do not isolate the build in a clean environment'
 complete -c pdm -A -n '__fish_seen_subcommand_from remove' -l no-self -d 'Don\'t install the project itself'
@@ -212,6 +217,7 @@ complete -c pdm -A -n '__fish_seen_subcommand_from sync' -l dry-run -d 'Show the
 complete -c pdm -A -n '__fish_seen_subcommand_from sync' -l global -d 'Use the global project, supply the project root with `-p` option'
 complete -c pdm -A -n '__fish_seen_subcommand_from sync' -l group -d 'Select group of optional-dependencies or dev-dependencies(with -d). Can be supplied multiple times, use ":all" to include all groups under the same species.'
 complete -c pdm -A -n '__fish_seen_subcommand_from sync' -l help -d 'show this help message and exit'
+complete -c pdm -A -n '__fish_seen_subcommand_from sync' -l lockfile -d 'Specify another lockfile path, or use `PDM_LOCKFILE` env variable. Default: pdm.lock'
 complete -c pdm -A -n '__fish_seen_subcommand_from sync' -l no-clean -d 'don\'t clean unused packages'
 complete -c pdm -A -n '__fish_seen_subcommand_from sync' -l no-default -d 'Don\'t include dependencies from the default group'
 complete -c pdm -A -n '__fish_seen_subcommand_from sync' -l no-editable -d 'Install non-editable versions for all packages'
@@ -227,6 +233,7 @@ complete -c pdm -A -n '__fish_seen_subcommand_from update' -l dev -d 'Select dev
 complete -c pdm -A -n '__fish_seen_subcommand_from update' -l global -d 'Use the global project, supply the project root with `-p` option'
 complete -c pdm -A -n '__fish_seen_subcommand_from update' -l group -d 'Select group of optional-dependencies or dev-dependencies(with -d). Can be supplied multiple times, use ":all" to include all groups under the same species.'
 complete -c pdm -A -n '__fish_seen_subcommand_from update' -l help -d 'show this help message and exit'
+complete -c pdm -A -n '__fish_seen_subcommand_from update' -l lockfile -d 'Specify another lockfile path, or use `PDM_LOCKFILE` env variable. Default: pdm.lock'
 complete -c pdm -A -n '__fish_seen_subcommand_from update' -l no-default -d 'Don\'t include dependencies from the default group'
 complete -c pdm -A -n '__fish_seen_subcommand_from update' -l no-editable -d 'Install non-editable versions for all packages'
 complete -c pdm -A -n '__fish_seen_subcommand_from update' -l no-isolation -d 'Do not isolate the build in a clean environment'
diff --git a/pdm/cli/completions/pdm.ps1 b/pdm/cli/completions/pdm.ps1
index 06cfd74c2e..003719cdd3 100644
--- a/pdm/cli/completions/pdm.ps1
+++ b/pdm/cli/completions/pdm.ps1
@@ -198,7 +198,7 @@ function TabExpansion($line, $lastWord) {
 
             "add" {
                 $completer.AddOpts(@(
-                        [Option]::new(("-d", "--dev", "--save-compatible", "--save-wildcard", "--dry-run", "--save-exact", "--save-minimum", "--update-eager", "--update-reuse", "-g", "--global", "--no-sync", "--no-editable", "--no-self", "-u", "--unconstrained", "--no-isolation", "--pre", "--prerelease")),
+                        [Option]::new(("-d", "--dev", "--save-compatible", "--save-wildcard", "--dry-run", "--save-exact", "--save-minimum", "--update-eager", "--update-reuse", "-g", "--global", "--no-sync", "--no-editable", "--no-self", "-u", "--unconstrained", "--no-isolation", "--pre", "--prerelease", "-L", "--lockfile")),
                         $sectionOption,
                         $projectOption,
                         [Option]::new(@("-e", "--editable")).WithValues(@(getPyPIPackages))
@@ -230,7 +230,7 @@ function TabExpansion($line, $lastWord) {
             }
             "export" {
                 $completer.AddOpts(@(
-                        [Option]::new(@("--dev", "--output", "--global", "--no-default", "--prod", "--production", "-g", "-d", "-o", "--without-hashes")),
+                        [Option]::new(@("--dev", "--output", "--global", "--no-default", "--prod", "--production", "-g", "-d", "-o", "--without-hashes", "-L", "--lockfile")),
                         $formatOption,
                         $sectionOption,
                         $projectOption
@@ -264,7 +264,7 @@ function TabExpansion($line, $lastWord) {
             }
             "install" {
                 $completer.AddOpts(@(
-                        [Option]::new(("-d", "--dev", "-g", "--global", "--dry-run", "--no-default", "--no-lock", "--prod", "--production", "--no-editable", "--no-self", "--no-isolation", "--check")),
+                        [Option]::new(("-d", "--dev", "-g", "--global", "--dry-run", "--no-default", "--no-lock", "--prod", "--production", "--no-editable", "--no-self", "--no-isolation", "--check", "-L", "--lockfile")),
                         $sectionOption,
                         $projectOption
                     ))
@@ -281,7 +281,7 @@ function TabExpansion($line, $lastWord) {
             "lock" {
                 $completer.AddOpts(
                     @(
-                        [Option]::new(@("--global", "-g", "--no-isolation", "--refresh")),
+                        [Option]::new(@("--global", "-g", "--no-isolation", "--refresh", "-L", "--lockfile")),
                         $projectOption
                     ))
                 break
@@ -310,7 +310,7 @@ function TabExpansion($line, $lastWord) {
             "remove" {
                 $completer.AddOpts(
                     @(
-                        [Option]::new(@("--global", "-g", "--dev", "-d", "--dry-run", "--no-sync", "--no-editable", "--no-self", "--no-isolation")),
+                        [Option]::new(@("--global", "-g", "--dev", "-d", "--dry-run", "--no-sync", "--no-editable", "--no-self", "--no-isolation", "-L", "--lockfile")),
                         $projectOption,
                         $sectionOption
                     ))
@@ -337,7 +337,7 @@ function TabExpansion($line, $lastWord) {
             }
             "sync" {
                 $completer.AddOpts(@(
-                        [Option]::new(("-d", "--dev", "-g", "--global", "--no-default", "--clean", "--no-clean", "--dry-run", "-r", "--reinstall", "--prod", "--production", "--no-editable", "--no-self", "--no-isolation")),
+                        [Option]::new(("-d", "--dev", "-g", "--global", "--no-default", "--clean", "--no-clean", "--dry-run", "-r", "--reinstall", "--prod", "--production", "--no-editable", "--no-self", "--no-isolation", "-L", "--lockfile")),
                         $sectionOption,
                         $projectOption
                     ))
@@ -345,7 +345,7 @@ function TabExpansion($line, $lastWord) {
             }
             "update" {
                 $completer.AddOpts(@(
-                        [Option]::new(("-d", "--dev", "--save-compatible", "--prod", "--production", "--save-wildcard", "--save-exact", "--save-minimum", "--update-eager", "--update-reuse", "-g", "--global", "--dry-run", "--outdated", "--top", "-u", "--unconstrained", "--no-editable", "--no-self", "--no-isolation", "--no-sync", "--pre", "--prerelease")),
+                        [Option]::new(("-d", "--dev", "--save-compatible", "--prod", "--production", "--save-wildcard", "--save-exact", "--save-minimum", "--update-eager", "--update-reuse", "-g", "--global", "--dry-run", "--outdated", "--top", "-u", "--unconstrained", "--no-editable", "--no-self", "--no-isolation", "--no-sync", "--pre", "--prerelease", "-L", "--lockfile")),
                         $sectionOption,
                         $projectOption
                     ))
diff --git a/pdm/cli/completions/pdm.zsh b/pdm/cli/completions/pdm.zsh
index 0d1b62b8ec..4520aa7b5d 100644
--- a/pdm/cli/completions/pdm.zsh
+++ b/pdm/cli/completions/pdm.zsh
@@ -59,6 +59,7 @@ _pdm() {
         {-g,--global}'[Use the global project, supply the project root with `-p` option]'
         {-d,--dev}'[Add packages into dev dependencies]'
         {-G,--group}'[Specify the target dependency group to add into]:group:_pdm_groups'
+        {-L,--lockfile}'[Specify another lockfile path, or use `PDM_LOCKFILE` env variable. Default: pdm.lock]:lockfile:_files'
         '--no-sync[Only write pyproject.toml and do not sync the working set]'
         '--save-compatible[Save compatible version specifiers]'
         '--save-wildcard[Save wildcard version specifiers]'
@@ -136,6 +137,7 @@ _pdm() {
         {-g,--global}'[Use the global project, supply the project root with `-p` option]'
         {-f+,--format+}"[Specify the export file format]:format:(pipfile poetry flit requirements setuppy)"
         "--without-hashes[Don't include artifact hashes]"
+        {-L,--lockfile}'[Specify another lockfile path, or use `PDM_LOCKFILE` env variable. Default: pdm.lock]:lockfile:_files'
         {-o+,--output+}"[Write output to the given file, or print to stdout if not given]:output file:_files"
         {-G+,--group+}'[Select group of optional-dependencies or dev-dependencies(with -d). Can be supplied multiple times, use ":all" to include all groups under the same species]:group:_pdm_groups'
         {-d,--dev}"[Select dev dependencies]"
@@ -170,6 +172,7 @@ _pdm() {
         {-g,--global}'[Use the global project, supply the project root with `-p` option]'
         {-G+,--group+}'[Select group of optional-dependencies or dev-dependencies(with -d). Can be supplied multiple times, use ":all" to include all groups under the same species]:group:_pdm_groups'
         {-d,--dev}"[Select dev dependencies]"
+        {-L,--lockfile}'[Specify another lockfile path, or use `PDM_LOCKFILE` env variable. Default: pdm.lock]:lockfile:_files'
         {--prod,--production}"[Unselect dev dependencies]"
         "--no-lock[Don't do lock if lock file is not found or outdated]"
         "--no-default[Don\'t include dependencies from the default group]"
@@ -192,6 +195,7 @@ _pdm() {
     lock)
       arguments+=(
         {-g,--global}'[Use the global project, supply the project root with `-p` option]'
+        {-L,--lockfile}'[Specify another lockfile path, or use `PDM_LOCKFILE` env variable. Default: pdm.lock]:lockfile:_files'
         "--no-isolation[Do not isolate the build in a clean environment]"
         "--refresh[Don't update pinned versions, only refresh the lock file]"
       )
@@ -237,6 +241,7 @@ _pdm() {
         {-g,--global}'[Use the global project, supply the project root with `-p` option]'
         {-G,--group}'[Specify the target dependency group to remove from]:group:_pdm_groups'
         {-d,--dev}"[Remove packages from dev dependencies]"
+        {-L,--lockfile}'[Specify another lockfile path, or use `PDM_LOCKFILE` env variable. Default: pdm.lock]:lockfile:_files'
         "--no-sync[Only write pyproject.toml and do not uninstall packages]"
         '--no-editable[Install non-editable versions for all packages]'
         "--no-self[Don't install the project itself]"
@@ -281,6 +286,7 @@ _pdm() {
         {-g,--global}'[Use the global project, supply the project root with `-p` option]'
         {-G+,--group+}'[Select group of optional-dependencies or dev-dependencies(with -d). Can be supplied multiple times, use ":all" to include all groups under the same species]:group:_pdm_groups'
         {-d,--dev}"[Select dev dependencies]"
+        {-L,--lockfile}'[Specify another lockfile path, or use `PDM_LOCKFILE` env variable. Default: pdm.lock]:lockfile:_files'
         {--prod,--production}"[Unselect dev dependencies]"
         '--dry-run[Only prints actions without actually running them]'
         {-r,--reinstall}"[Force reinstall existing dependencies]"
@@ -296,6 +302,7 @@ _pdm() {
       arguments+=(
         {-g,--global}'[Use the global project, supply the project root with `-p` option]'
         {-G+,--group+}'[Select group of optional-dependencies or dev-dependencies(with -d). Can be supplied multiple times, use ":all" to include all groups under the same species]:group:_pdm_groups'
+        {-L,--lockfile}'[Specify another lockfile path, or use `PDM_LOCKFILE` env variable. Default: pdm.lock]:lockfile:_files'
         '--save-compatible[Save compatible version specifiers]'
         '--save-wildcard[Save wildcard version specifiers]'
         '--save-exact[Save exact version specifiers]'
diff --git a/pdm/cli/options.py b/pdm/cli/options.py
index f821bf5da2..921780d835 100644
--- a/pdm/cli/options.py
+++ b/pdm/cli/options.py
@@ -112,6 +112,13 @@ def wrapped_type(obj: Any) -> Any:
     help="Show the difference only and don't perform any action",
 )
 
+lockfile_option = Option(
+    "-L",
+    "--lockfile",
+    default=os.getenv("PDM_LOCKFILE"),
+    help="Specify another lockfile path, or use `PDM_LOCKFILE` env variable. "
+    "Default: pdm.lock",
+)
 
 pep582_option = Option(
     "--pep582",
diff --git a/pdm/core.py b/pdm/core.py
index 59bfc407d0..e9b78dc2e7 100644
--- a/pdm/core.py
+++ b/pdm/core.py
@@ -112,6 +112,8 @@ def ensure_project(
                 global_config=options.config or os.getenv("PDM_CONFIG_FILE"),
             )
             options.project = project
+        if getattr(options, "lockfile", None):
+            options.project.lockfile_file = options.lockfile
 
     def create_project(
         self,
diff --git a/pdm/project/core.py b/pdm/project/core.py
index 12eac2182d..b36c1b7536 100644
--- a/pdm/project/core.py
+++ b/pdm/project/core.py
@@ -103,6 +103,7 @@ def __init__(
         self.root = Path(root_path or "").absolute()
         self.is_global = is_global
         self.init_global_project()
+        self._lockfile_file = self.root / "pdm.lock"
 
     def __repr__(self) -> str:
         return f"<Project '{self.root.as_posix()}'>"
@@ -113,7 +114,12 @@ def pyproject_file(self) -> Path:
 
     @property
     def lockfile_file(self) -> Path:
-        return self.root / "pdm.lock"
+        return self._lockfile_file
+
+    @lockfile_file.setter
+    def lockfile_file(self, path: str) -> None:
+        self._lockfile_file = Path(path).absolute()
+        self._lockfile = None
 
     @property
     def pyproject(self) -> dict | None:
diff --git a/tests/cli/test_lock.py b/tests/cli/test_lock.py
new file mode 100644
index 0000000000..e3eb48e50a
--- /dev/null
+++ b/tests/cli/test_lock.py
@@ -0,0 +1,66 @@
+import pytest
+
+from pdm.cli import actions
+from pdm.models.requirements import parse_requirement
+
+
+def test_lock_command(project, invoke, mocker):
+    m = mocker.patch.object(actions, "do_lock")
+    invoke(["lock"], obj=project)
+    m.assert_called_with(project, refresh=False)
+
+
+@pytest.mark.usefixtures("repository")
+def test_lock_dependencies(project):
+    project.add_dependencies({"requests": parse_requirement("requests")})
+    actions.do_lock(project)
+    assert project.lockfile_file.exists()
+    locked = project.locked_repository.all_candidates
+    for package in ("requests", "idna", "chardet", "certifi"):
+        assert package in locked
+
+
+def test_lock_refresh(invoke, project, repository):
+    project.add_dependencies({"requests": parse_requirement("requests")})
+    result = invoke(["lock"], obj=project)
+    assert result.exit_code == 0
+    assert project.is_lockfile_hash_match()
+    assert not project.lockfile["metadata"]["files"].get("requests 2.19.1")
+    project.add_dependencies({"requests": parse_requirement("requests>=2.0")})
+    repository.get_hashes = (
+        lambda c: {"requests-2.19.1-py3-none-any.whl": "sha256:abcdef123456"}
+        if c.identify() == "requests"
+        else {}
+    )
+    assert not project.is_lockfile_hash_match()
+    result = invoke(["lock", "--refresh"], obj=project)
+    assert result.exit_code == 0
+    assert project.is_lockfile_hash_match()
+    assert project.lockfile["metadata"]["files"]["requests 2.19.1"][0] == {
+        "file": "requests-2.19.1-py3-none-any.whl",
+        "hash": "sha256:abcdef123456",
+    }
+
+
+def test_lock_refresh_keep_consistent(invoke, project, repository):
+    project.add_dependencies({"requests": parse_requirement("requests")})
+    result = invoke(["lock"], obj=project)
+    assert result.exit_code == 0
+    assert project.is_lockfile_hash_match()
+    previous = project.lockfile_file.read_text()
+    result = invoke(["lock", "--refresh"], obj=project)
+    assert result.exit_code == 0
+    assert project.lockfile_file.read_text() == previous
+
+
+@pytest.mark.usefixtures("repository")
+def test_innovations_with_specified_lockfile(invoke, project, working_set):
+    project.add_dependencies({"requests": parse_requirement("requests")})
+    lockfile = str(project.root / "mylock.lock")
+    invoke(["lock", "--lockfile", lockfile], strict=True, obj=project)
+    assert project.lockfile_file == project.root / "mylock.lock"
+    assert project.is_lockfile_hash_match()
+    locked = project.locked_repository.all_candidates
+    assert "requests" in locked
+    invoke(["sync", "--lockfile", lockfile], strict=True, obj=project)
+    assert "requests" in working_set
diff --git a/tests/cli/test_others.py b/tests/cli/test_others.py
index 38403d7e43..f237328563 100644
--- a/tests/cli/test_others.py
+++ b/tests/cli/test_others.py
@@ -7,16 +7,6 @@
 from tests import FIXTURES
 
 
-@pytest.mark.usefixtures("repository")
-def test_lock_dependencies(project):
-    project.add_dependencies({"requests": parse_requirement("requests")})
-    actions.do_lock(project)
-    assert project.lockfile_file.exists()
-    locked = project.locked_repository.all_candidates
-    for package in ("requests", "idna", "chardet", "certifi"):
-        assert package in locked
-
-
 @pytest.mark.usefixtures("project_no_init", "local_finder")
 def test_build_distributions(tmp_path, core):
     project = core.create_project()
@@ -51,12 +41,6 @@ def test_help_option(invoke):
     assert "PDM - Python Development Master" in result.output
 
 
-def test_lock_command(project, invoke, mocker):
-    m = mocker.patch.object(actions, "do_lock")
-    invoke(["lock"], obj=project)
-    m.assert_called_with(project, refresh=False)
-
-
 def test_info_command(project, invoke):
     result = invoke(["info"], obj=project)
     assert "Project Root:" in result.output
@@ -261,39 +245,6 @@ def test_completion_command(invoke):
     assert "(completion)" in result.output
 
 
-def test_lock_refresh(invoke, project, repository):
-    project.add_dependencies({"requests": parse_requirement("requests")})
-    result = invoke(["lock"], obj=project)
-    assert result.exit_code == 0
-    assert project.is_lockfile_hash_match()
-    assert not project.lockfile["metadata"]["files"].get("requests 2.19.1")
-    project.add_dependencies({"requests": parse_requirement("requests>=2.0")})
-    repository.get_hashes = (
-        lambda c: {"requests-2.19.1-py3-none-any.whl": "sha256:abcdef123456"}
-        if c.identify() == "requests"
-        else {}
-    )
-    assert not project.is_lockfile_hash_match()
-    result = invoke(["lock", "--refresh"], obj=project)
-    assert result.exit_code == 0
-    assert project.is_lockfile_hash_match()
-    assert project.lockfile["metadata"]["files"]["requests 2.19.1"][0] == {
-        "file": "requests-2.19.1-py3-none-any.whl",
-        "hash": "sha256:abcdef123456",
-    }
-
-
-def test_lock_refresh_keep_consistent(invoke, project, repository):
-    project.add_dependencies({"requests": parse_requirement("requests")})
-    result = invoke(["lock"], obj=project)
-    assert result.exit_code == 0
-    assert project.is_lockfile_hash_match()
-    previous = project.lockfile_file.read_text()
-    result = invoke(["lock", "--refresh"], obj=project)
-    assert result.exit_code == 0
-    assert project.lockfile_file.read_text() == previous
-
-
 @pytest.mark.network
 def test_show_update_hint(invoke, project):
     prev_version = project.core.version