A wall is a structure that defines an area, carries a load, or provides shelter or security. There are many kinds of walls, including:
- Walls in buildings that form a fundamental part of the superstructure or separate interior rooms, sometimes for fire safety
- Retaining walls, which hold back dirt, stone, water, or noise sound
- Permanent, solid fences
- Border barriers between countries
- Brick wall
- Precast wall
- Stone wall
- Glass wall