Rapid Run
General data
- Name: Rapid Run
- Water system: Mississippi River
- Water type: Stream
- Progression: Ohio River -> Mississippi River -> Gulf of Mexico -> Atlantic Ocean -> Planet Earth
- Climates: Continental
- Continents: North America
- Countries: United States of America
Rapid Run is a stream located entirely within Hamilton County, Ohio. The 4.7-mile (7.6 km) long stream is a tributary of the Ohio River.