diff --git a/docs/docs/apis/proto/project.md b/docs/docs/apis/proto/project.md
index 48066cd951..0468a98b43 100644
--- a/docs/docs/apis/proto/project.md
+++ b/docs/docs/apis/proto/project.md
@@ -102,6 +102,18 @@ title: zitadel/project.proto
 | Field | Type | Description | Validation |
 | ----- | ---- | ----------- | ----------- |
 | [**oneof**](https://developers.google.com/protocol-buffers/docs/proto3#oneof) query.name_query |  ProjectNameQuery | - |  |
+| [**oneof**](https://developers.google.com/protocol-buffers/docs/proto3#oneof) query.project_resource_owner_query |  ProjectResourceOwnerQuery | - |  |
+
+
+
+
+### ProjectResourceOwnerQuery
+
+
+
+| Field | Type | Description | Validation |
+| ----- | ---- | ----------- | ----------- |
+| resource_owner |  string | - | string.max_len: 200<br />  |
 
 
 
diff --git a/internal/api/grpc/project/converter.go b/internal/api/grpc/project/converter.go
index e3490dfc15..80b6a4e8b3 100644
--- a/internal/api/grpc/project/converter.go
+++ b/internal/api/grpc/project/converter.go
@@ -68,6 +68,8 @@ func ProjectQueryToModel(apiQuery *proj_pb.ProjectQuery) (query.SearchQuery, err
 	switch q := apiQuery.Query.(type) {
 	case *proj_pb.ProjectQuery_NameQuery:
 		return query.NewProjectNameSearchQuery(object.TextMethodToQuery(q.NameQuery.Method), q.NameQuery.Name)
+	case *proj_pb.ProjectQuery_ProjectResourceOwnerQuery:
+		return query.NewProjectResourceOwnerSearchQuery(q.ProjectResourceOwnerQuery.ResourceOwner)
 	default:
 		return nil, errors.ThrowInvalidArgument(nil, "ORG-vR9nC", "List.Query.Invalid")
 	}
diff --git a/proto/zitadel/project.proto b/proto/zitadel/project.proto
index 4ae408b0b6..fbf4ee2d62 100644
--- a/proto/zitadel/project.proto
+++ b/proto/zitadel/project.proto
@@ -61,7 +61,7 @@ message GrantedProject {
             description: "current state of the project grant";
         }
     ];
-    
+
     string project_id = 6 [
         (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_field) = {
             example: "\"69629023906488334\""
@@ -109,6 +109,7 @@ message ProjectQuery {
         option (validate.required) = true;
 
         ProjectNameQuery name_query = 1;
+        ProjectResourceOwnerQuery project_resource_owner_query = 2;
     }
 }
 
@@ -127,6 +128,15 @@ message ProjectNameQuery {
     ];
 }
 
+message ProjectResourceOwnerQuery {
+    string resource_owner = 1 [
+        (validate.rules).string = {max_len: 200},
+        (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_field) = {
+            example: "\"69629023906488334\""
+        }
+    ];
+}
+
 message Role {
     string key = 1 [
         (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_field) = {