CR1

CR1 or CR-1 may refer to:

Aircraft

 * Cessna CR-1, an American air racer
 * Fiat CR.1, a 1920s Italian biplane fighter aircraft

Automobiles

 * Climax CR1, a 2015 British sports car
 * Aquila CR1, a 2008–present Danish race car

Other uses

 * Complement receptor 1, a protein
 * CR-1 visa, a United States immigrant visa that allows a spouse of a US citizen to enter as a conditional permanent resident
 * CR-1 gene is about Teratocarcinoma-derived growth factor 1