Mad River
- Erythropotamos
- List of rivers of British Columbia
- List of rivers of Massachusetts
- List of rivers of Ontario
- Mad River (California)
- Mad River (Cocheco River)
- Mad River (Cold River)
- Mad River (Connecticut)
- Mad River (Ohio)
- Mad River (Pemigewasset River)
- Mad River (Vermont)
- Mad River (Washington)
- Mad River (band)
- Mad River (novel)
- Mad River Brewing Company
- Mad River Glen
- Mad River Local School District
- Mad River Road
- Mad River Township (disambiguation)
- Mad River, California