CR9

CR9 may refer to:
 * CR9, a postcode district in the CR postcode area
 * Cristiano Ronaldo, Portuguese footballer who is currently playing at Al Nassr FC, referencing his first season at 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
 * Serangoon North MRT station, Singapore, MRT station code