diff --git a/modules/apps/27-interchain-accounts/controller/types/msgs.go b/modules/apps/27-interchain-accounts/controller/types/msgs.go
index b600942bf01..1187b579ff3 100644
--- a/modules/apps/27-interchain-accounts/controller/types/msgs.go
+++ b/modules/apps/27-interchain-accounts/controller/types/msgs.go
@@ -12,6 +12,8 @@ import (
 	ibcerrors "github.com/cosmos/ibc-go/v8/modules/core/errors"
 )
 
+const MaximumOwnerLength = 2048 // maximum length of the owner in bytes
+
 var (
 	_ sdk.Msg = (*MsgRegisterInterchainAccount)(nil)
 	_ sdk.Msg = (*MsgSendTx)(nil)
@@ -41,6 +43,10 @@ func (msg MsgRegisterInterchainAccount) ValidateBasic() error {
 		return errorsmod.Wrap(ibcerrors.ErrInvalidAddress, "owner address cannot be empty")
 	}
 
+	if len(msg.Owner) > MaximumOwnerLength {
+		return errorsmod.Wrapf(ibcerrors.ErrInvalidAddress, "owner addresss must not exceed %d bytes", MaximumOwnerLength)
+	}
+
 	return nil
 }
 
diff --git a/modules/apps/27-interchain-accounts/controller/types/msgs_test.go b/modules/apps/27-interchain-accounts/controller/types/msgs_test.go
index 13ef2c9ae1a..33a02068464 100644
--- a/modules/apps/27-interchain-accounts/controller/types/msgs_test.go
+++ b/modules/apps/27-interchain-accounts/controller/types/msgs_test.go
@@ -64,6 +64,13 @@ func TestMsgRegisterInterchainAccountValidateBasic(t *testing.T) {
 			},
 			false,
 		},
+		{
+			"owner address is too long",
+			func() {
+				msg.Owner = ibctesting.GenerateString(types.MaximumOwnerLength + 1)
+			},
+			false,
+		},
 	}
 
 	for i, tc := range testCases {