CR1 explained

CR1 or CR-1 may refer to:

Vehicles

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