C9
C9, C09 or C-9 may refer to:
Organizations
Cloud9 (esports organization), a professional esports organization that sponsor teams that compete in several games
Associations
C9 League, an association of nine universities analogous to the Ivy League in mainland China.
The nine members of Pope Francis's international Council of Cardinals
Transportation
Cierva C.9, a 1927 British experimental autogyro
HMS C9, a C-class submarine of the Royal Navy
Ford C-9, U.S. military designation for a Ford Trimotor aircraft
McDonnell Douglas C-9 (C-9A Nightingale/C-9B Skytrain II), a transport aircraft of the United States Air Force (Nightingale) or U.S. Naval Reserve and United States Marine Corps (Skytrain II). It is the military version of McDonnell Douglas DC-9
USS Montgomery (C-9), a protected cruiser of the United States Navy
C9, the IATA code for Cirrus Airlines
Sauber C9, a Le Mans racing car
Military/Weapons
Hi-Point Models C9 and C9 Comp handguns
C9 LMG, a Canadian variant of the FN MINIMI light machine gun
