C16 may refer to: , a 1908 British C-class submarine Sauber C16, a 1997 racing car IEC 60320 C16, an electrical connector used for electric kettles and other small appliances C16, the ICD-10 code for stomach cancer Caldwell 16 (NGC 7243), an open cluster in the constellation Lacerta C16 (drug), a protein kinase inhibitor used in scientific research C16 Close Area Suppression Weapon, the Heckler & Koch GMG's Canadian designation The 16th century A.D. Commodore 16, a home computer Palmitic acid, a common saturated fatty acid C-16 may refer to: C-16 highway (Spain), a highway in Catalonia C-16: FBI, a 1997–98 American TV series Bill C-16, a Canadian law regarding gender expression and gender identity The Cessna 208 airliner, as designated in the U.S. Army The French Defence, as coded in the Encyclopaedia of Chess Openings Carbon-16 (C-16 or 16C), an isotope of carbon