CR9 may refer to:
- A clothing brand having its origin in Croydon
- CR9, a postcode district in the CR postcode area
- Cristiano Ronaldo, Portuguese footballer playing for Real Madrid
- The CRJ-900, a regional airliner based on the successful Bombardier CRJ200
- County Route 9 (Suffolk County, New York), a road in Huntington, New York, United States