C21
Introduction '''C-21''', '''C 21''', or '''C21''' may refer to:* C21 Sako TRG M10 Sniper Weapon System, Canadian Armed Forces sniper rifle. * C21 (group), a Danish boy band** ''C21'' (album), 2003* C-21 Dolphin, a flying boat used by the United States Army Air Corps* , a 1909 British C class submarine* Learjet C-21, an American military transport aircraft* Sauber C21, a 2002 racing car* Space Adventures C-21, a Russian design for a suborbital rocket plane for Space Adventures* Anal cancer (ICD-10 code: C21)* Center Game (Encyclopaedia of Chess Openings code: C21)* Caldwell 21 or NGC 4449, an irregular galaxy in the constellation Canes Venatici* Carbon-21 (C-21 or 21C), an isotope of carbon* ''Catch 21'', a television game show based on blackjack*
See also * 21st century * Century 21 (disambiguation)* 21c (disambiguation)