diff --git a/README.md b/README.md
index a788596..e2d9fcd 100644
--- a/README.md
+++ b/README.md
@@ -67,7 +67,7 @@ Created out/Alice.csr
 
 certstrap requires either `-common-name` or `-domain` flag to be set in order to generate a certificate signing request.  The CN for the certificate will be found from these fields.
 
-If your server has mutiple ip addresses or domains, use comma seperated ip/domain/uri list. eg: `./certstrap request-cert -ip $ip1,$ip2 -domain $domain1,$domain2 -uri $uri1,$uri2`
+If your server has mutiple ip addresses, domains or organizational units, use comma seperated ip/domain/uri/ou list. eg: `./certstrap request-cert -ip $ip1,$ip2 -domain $domain1,$domain2 -uri $uri1,$uri2 -ou $org1,$org2`
 
 If you do not wish to generate a new keypair, you can use a pre-existing private
 PEM key with the `-key` flag
diff --git a/cmd/init.go b/cmd/init.go
index 3c94af1..f407307 100644
--- a/cmd/init.go
+++ b/cmd/init.go
@@ -59,7 +59,7 @@ func NewInitCommand() cli.Command {
 			},
 			cli.StringFlag{
 				Name:  "organizational-unit, ou",
-				Usage: "Sets the Organizational Unit (OU) field of the certificate",
+				Usage: "Sets the Organizational Unit (OU) values of the certificate",
 			},
 			cli.StringFlag{
 				Name:  "country, c",
diff --git a/cmd/request_cert.go b/cmd/request_cert.go
index f6e8b93..d0cc586 100644
--- a/cmd/request_cert.go
+++ b/cmd/request_cert.go
@@ -63,7 +63,7 @@ func NewCertRequestCommand() cli.Command {
 			},
 			cli.StringFlag{
 				Name:  "organizational-unit, ou",
-				Usage: "Sets the Organizational Unit (OU) field of the certificate",
+				Usage: "Sets the Organizational Unit (OU) values of the certificate",
 			},
 			cli.StringFlag{
 				Name:  "province, st",
@@ -182,7 +182,13 @@ func newCertAction(c *cli.Context) {
 		}
 	}
 
-	csr, err := pkix.CreateCertificateSigningRequest(key, c.String("organizational-unit"), ips, domains, uris, c.String("organization"), c.String("country"), c.String("province"), c.String("locality"), name)
+	// split multiple organizational-unit (if any)
+	organizationalUnits := strings.Split(c.String("organizational-unit"), ",")
+	if c.String("organizational-unit") == "" {
+		organizationalUnits = nil
+	}
+
+	csr, err := pkix.CreateCertificateSigningRequest(key, organizationalUnits, ips, domains, uris, c.String("organization"), c.String("country"), c.String("province"), c.String("locality"), name)
 	if err != nil {
 		fmt.Fprintln(os.Stderr, "Create certificate request error:", err)
 		os.Exit(1)
diff --git a/pkix/csr.go b/pkix/csr.go
index 861ef7f..6634fa9 100644
--- a/pkix/csr.go
+++ b/pkix/csr.go
@@ -78,11 +78,11 @@ func ParseAndValidateURIs(uriList string) (res []*url.URL, err error) {
 }
 
 // CreateCertificateSigningRequest sets up a request to create a csr file with the given parameters
-func CreateCertificateSigningRequest(key *Key, organizationalUnit string, ipList []net.IP, domainList []string, uriList []*url.URL, organization string, country string, province string, locality string, commonName string) (*CertificateSigningRequest, error) {
+func CreateCertificateSigningRequest(key *Key, organizationalUnits []string, ipList []net.IP, domainList []string, uriList []*url.URL, organization string, country string, province string, locality string, commonName string) (*CertificateSigningRequest, error) {
 	csrPkixName := pkix.Name{CommonName: commonName}
 
-	if len(organizationalUnit) > 0 {
-		csrPkixName.OrganizationalUnit = []string{organizationalUnit}
+	if len(organizationalUnits) > 0 {
+		csrPkixName.OrganizationalUnit = organizationalUnits
 	}
 	if len(organization) > 0 {
 		csrPkixName.Organization = []string{organization}
diff --git a/tests/organization_unit_test.go b/tests/organization_unit_test.go
new file mode 100644
index 0000000..51ddb28
--- /dev/null
+++ b/tests/organization_unit_test.go
@@ -0,0 +1,56 @@
+//go:build integration
+// +build integration
+
+/*-
+ * Copyright 2015 Square Inc.
+ * Copyright 2014 CoreOS
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package tests
+
+import (
+	"os"
+	"strings"
+	"testing"
+)
+
+func TestOrganizationalUnit(t *testing.T) {
+	os.RemoveAll(depotDir)
+	defer os.RemoveAll(depotDir)
+
+	// test with single organizational-unit
+	stdout, stderr, err := run(binPath, "request-cert", "--passphrase", passphrase, "--common-name", "CA", "--ou", "ORG-1")
+	if stderr != "" || err != nil {
+		t.Fatalf("Received unexpected error: %v, %v", stderr, err)
+	}
+	if strings.Count(stdout, "Created") != 2 {
+		t.Fatalf("Received incorrect create: %v", stdout)
+	}
+
+	os.RemoveAll(depotDir)
+	defer os.RemoveAll(depotDir)
+
+	// test with multiple  organizational-units
+	stdout, stderr, err = run(binPath, "request-cert", "--passphrase", passphrase, "--common-name", "CA", "--ou", "ORG-1,ORG-2")
+	if stderr != "" || err != nil {
+		t.Fatalf("Received unexpected error: %v, %v", stderr, err)
+	}
+	if strings.Count(stdout, "Created") != 2 {
+		t.Fatalf("Received incorrect create: %v", stdout)
+	}
+
+	os.RemoveAll(depotDir)
+	defer os.RemoveAll(depotDir)
+}