diff --git a/backend/app/schemas/user.py b/backend/app/schemas/user.py
new file mode 100644
index 0000000..1acc131
--- /dev/null
+++ b/backend/app/schemas/user.py
@@ -0,0 +1,36 @@
+"""User schemas."""
+from pydantic import BaseModel, EmailStr
+from datetime import datetime
+from typing import Optional
+
+class UserBase(BaseModel):
+    """Base user schema."""
+    username: str
+    email: EmailStr
+    full_name: Optional[str] = None
+
+class UserCreate(UserBase):
+    """Schema for creating a user."""
+    password: str
+
+class UserUpdate(BaseModel):
+    """Schema for updating a user."""
+    email: Optional[EmailStr] = None
+    full_name: Optional[str] = None
+    password: Optional[str] = None
+    is_active: Optional[bool] = None
+
+class UserResponse(UserBase):
+    """Schema for user response."""
+    id: int
+    is_active: bool
+    is_admin: bool
+    created_at: datetime
+    
+    class Config:
+        from_attributes = True
+
+class UserLogin(BaseModel):
+    """Schema for user login."""
+    username: str
+    password: str