diff --git a/.chronus/changes/add-tag-parameter-legacy-operations-2026-6-1-18-32-0.md b/.chronus/changes/add-tag-parameter-legacy-operations-2026-6-1-18-32-0.md
new file mode 100644
index 0000000000..568a9a0647
--- /dev/null
+++ b/.chronus/changes/add-tag-parameter-legacy-operations-2026-6-1-18-32-0.md
@@ -0,0 +1,7 @@
+---
+changeKind: feature
+packages:
+  - "@azure-tools/typespec-azure-resource-manager"
+---
+
+Add optional `Tag` template parameter to `Azure.ResourceManager.Legacy.Operations` to allow overriding the openapi tag value.
diff --git a/packages/typespec-azure-resource-manager/lib/legacy-types/interfaces.tsp b/packages/typespec-azure-resource-manager/lib/legacy-types/interfaces.tsp
index b542dff044..2f785ecc4f 100644
--- a/packages/typespec-azure-resource-manager/lib/legacy-types/interfaces.tsp
+++ b/packages/typespec-azure-resource-manager/lib/legacy-types/interfaces.tsp
@@ -17,13 +17,15 @@ using Rest;
  * @template Response The response returned by the operation list.
  * @template Error the error response returned by the operation list.
  * @template Parameters Additional request parameters for the list operation.
+ * @template Tag Optional. The openapi tag for the operation.
  */
 interface Operations<
   Response extends {} = ArmResponse<OperationListResult>,
   Error extends {} = ErrorResponse,
-  Parameters extends {} = {}
+  Parameters extends {} = {},
+  Tag extends valueof string = "Operations"
 > {
-  @tag("Operations")
+  @tag(Tag)
   @autoRoute
   @armUpdateProviderNamespace
   @doc("List the operations for the provider")
diff --git a/website/src/content/docs/docs/libraries/azure-resource-manager/reference/interfaces.md b/website/src/content/docs/docs/libraries/azure-resource-manager/reference/interfaces.md
index a5566796f7..7b931af710 100644
--- a/website/src/content/docs/docs/libraries/azure-resource-manager/reference/interfaces.md
+++ b/website/src/content/docs/docs/libraries/azure-resource-manager/reference/interfaces.md
@@ -2423,7 +2423,7 @@ Azure Resource Manager service. It implements
 GET "/providers/{provider-namespace}/operations"
 
 ```typespec
-interface Azure.ResourceManager.Legacy.Operations<Response, Error, Parameters>
+interface Azure.ResourceManager.Legacy.Operations<Response, Error, Parameters, Tag>
 ```
 
 #### Template Parameters
@@ -2433,11 +2433,12 @@ interface Azure.ResourceManager.Legacy.Operations<Response, Error, Parameters>
 | Response   | The response returned by the operation list.          |
 | Error      | the error response returned by the operation list.    |
 | Parameters | Additional request parameters for the list operation. |
+| Tag        | Optional. The openapi tag for the operation.          |
 
-#### `Operations.list` {#Azure.ResourceManager.Legacy.Operations<Response, Error, Parameters>.list}
+#### `Operations.list` {#Azure.ResourceManager.Legacy.Operations<Response, Error, Parameters, Tag>.list}
 
 ```typespec
-op Azure.ResourceManager.Legacy.Operations<Response, Error, Parameters>.list(apiVersion: string, provider: "Microsoft.ThisWillBeReplaced"): Response | Error
+op Azure.ResourceManager.Legacy.Operations<Response, Error, Parameters, Tag>.list(apiVersion: string, provider: "Microsoft.ThisWillBeReplaced"): Response | Error
 ```
 
 ### `RoutedOperations` {#Azure.ResourceManager.Legacy.RoutedOperations}