diff --git a/src/tracker/api/members.py b/src/tracker/api/members.py
index 98eaa4a..252aa3b 100644
--- a/src/tracker/api/members.py
+++ b/src/tracker/api/members.py
@@ -228,8 +228,14 @@ async def update_my_status(
 
 
 @router.delete("/members/{slug}")
-async def delete_member(slug: str, db: AsyncSession = Depends(get_db)):
-    """Soft delete member by setting is_active=False."""
+async def delete_member(
+    slug: str,
+    current_member: Member = Depends(get_current_member),
+    db: AsyncSession = Depends(get_db),
+):
+    """Soft delete member by setting is_active=False. Only owners can delete."""
+    if current_member.role != MemberRole.OWNER:
+        raise HTTPException(403, "Only owners can delete members")
     result = await db.execute(select(Member).where(Member.slug == slug))
     member = result.scalar_one_or_none()
     if not member:
diff --git a/src/tracker/api/projects.py b/src/tracker/api/projects.py
index 5e35b1b..e0929a8 100644
--- a/src/tracker/api/projects.py
+++ b/src/tracker/api/projects.py
@@ -1,6 +1,6 @@
 """Projects API."""
 
-from fastapi import APIRouter, Depends, HTTPException
+from fastapi import APIRouter, Depends, HTTPException, Request
 from pydantic import BaseModel
 from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
@@ -119,7 +119,10 @@ async def update_project(slug: str, req: ProjectUpdate, db: AsyncSession = Depen
 
 
 @router.delete("/projects/{slug}")
-async def delete_project(slug: str, db: AsyncSession = Depends(get_db)):
+async def delete_project(slug: str, request: Request, db: AsyncSession = Depends(get_db)):
+    member = getattr(request.state, "member", None)
+    if not member or member.role != MemberRole.OWNER:
+        raise HTTPException(403, "Only owners can delete projects")
     result = await db.execute(select(Project).where(Project.slug == slug))
     project = result.scalar_one_or_none()
     if not project: