diff --git a/.changelog/PLACEHOLDER.txt b/.changelog/PLACEHOLDER.txt
new file mode 100644
index 0000000000000..c96f0e6a82f11
--- /dev/null
+++ b/.changelog/PLACEHOLDER.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+mesh: Stop jwt providers from being created in non-default namespaces
+```
\ No newline at end of file
diff --git a/agent/structs/config_entry_jwt_provider.go b/agent/structs/config_entry_jwt_provider.go
index cc9a37be0c484..7336027d70954 100644
--- a/agent/structs/config_entry_jwt_provider.go
+++ b/agent/structs/config_entry_jwt_provider.go
@@ -509,7 +509,7 @@ func (e *JWTProviderConfigEntry) Validate() error {
 		return err
 	}
 
-	if err := e.validatePartition(); err != nil {
+	if err := e.validatePartitionAndNamespace(); err != nil {
 		return err
 	}
 
diff --git a/agent/structs/config_entry_jwt_provider_oss.go b/agent/structs/config_entry_jwt_provider_oss.go
index 2152f139f0f70..a2026e0cdff1e 100644
--- a/agent/structs/config_entry_jwt_provider_oss.go
+++ b/agent/structs/config_entry_jwt_provider_oss.go
@@ -12,9 +12,14 @@ import (
 	"github.com/hashicorp/consul/acl"
 )
 
-func (e *JWTProviderConfigEntry) validatePartition() error {
+func (e *JWTProviderConfigEntry) validatePartitionAndNamespace() error {
 	if !acl.IsDefaultPartition(e.PartitionOrDefault()) {
 		return fmt.Errorf("Partitions are an enterprise only feature")
 	}
+
+	if !acl.IsDefaultPartition(e.PartitionOrDefault()) {
+		return fmt.Errorf("Namespace are an enterprise only feature")
+	}
+
 	return nil
 }