diff --git a/backend/apps/api/rest/v0/chapter.py b/backend/apps/api/rest/v0/chapter.py
index 863a60784d..948d85ed4e 100644
--- a/backend/apps/api/rest/v0/chapter.py
+++ b/backend/apps/api/rest/v0/chapter.py
@@ -41,8 +41,14 @@ class ChapterDetail(ChapterBase):
     """Detail schema for Chapter (used in single item endpoints)."""
 
     country: str
+    leader_names: list[str]
     region: str
 
+    @staticmethod
+    def resolve_leader_names(obj):
+        """Resolve leader names."""
+        return [leader.member_name for leader in obj.entity_leaders]
+
 
 class ChapterError(Schema):
     """Chapter error schema."""
diff --git a/backend/apps/api/rest/v0/project.py b/backend/apps/api/rest/v0/project.py
index 8583ced431..84baebc53f 100644
--- a/backend/apps/api/rest/v0/project.py
+++ b/backend/apps/api/rest/v0/project.py
@@ -40,6 +40,12 @@ class ProjectDetail(ProjectBase):
     """Detail schema for Project (used in single item endpoints)."""
 
     description: str
+    leader_names: list[str]
+
+    @staticmethod
+    def resolve_leader_names(obj):
+        """Resolve leader names."""
+        return [leader.member_name for leader in obj.entity_leaders]
 
 
 class ProjectError(Schema):
diff --git a/backend/tests/apps/api/rest/v0/chapter_test.py b/backend/tests/apps/api/rest/v0/chapter_test.py
index 0a29d4a53f..ab4460dfb6 100644
--- a/backend/tests/apps/api/rest/v0/chapter_test.py
+++ b/backend/tests/apps/api/rest/v0/chapter_test.py
@@ -31,11 +31,16 @@
     ],
 )
 def test_chapter_serializer_validation(chapter_data):
+    class MockEntityMember:
+        def __init__(self, name):
+            self.member_name = name
+
     class MockChapter:
         def __init__(self, data):
             for key, value in data.items():
                 setattr(self, key, value)
             self.nest_key = data["key"]
+            self.entity_leaders = [MockEntityMember("Alice"), MockEntityMember("Bob")]
 
     chapter = ChapterDetail.from_orm(MockChapter(chapter_data))
 
@@ -44,6 +49,7 @@ def __init__(self, data):
     assert chapter.key == chapter_data["key"]
     assert chapter.latitude == chapter_data["latitude"]
     assert chapter.longitude == chapter_data["longitude"]
+    assert chapter.leader_names == ["Alice", "Bob"]
     assert chapter.name == chapter_data["name"]
     assert chapter.region == chapter_data["region"]
     assert chapter.updated_at == datetime.fromisoformat(chapter_data["updated_at"])
diff --git a/backend/tests/apps/api/rest/v0/project_test.py b/backend/tests/apps/api/rest/v0/project_test.py
index 112b41fb5c..309a6dae84 100644
--- a/backend/tests/apps/api/rest/v0/project_test.py
+++ b/backend/tests/apps/api/rest/v0/project_test.py
@@ -27,17 +27,23 @@
     ],
 )
 def test_project_serializer_validation(project_data):
+    class MockEntityMember:
+        def __init__(self, name):
+            self.member_name = name
+
     class MockProject:
         def __init__(self, data):
             for key, value in data.items():
                 setattr(self, key, value)
             self.nest_key = data["key"]
+            self.entity_leaders = [MockEntityMember("Alice"), MockEntityMember("Bob")]
 
     project = ProjectDetail.from_orm(MockProject(project_data))
 
     assert project.created_at == datetime.fromisoformat(project_data["created_at"])
     assert project.description == project_data["description"]
     assert project.key == project_data["key"]
+    assert project.leader_names == ["Alice", "Bob"]
     assert project.level == project_data["level"]
     assert project.name == project_data["name"]
     assert project.updated_at == datetime.fromisoformat(project_data["updated_at"])