C23 or C-23 may refer to: Aircraft Beechcraft C23 Musketeer, an American civil utility aircraft Caspar C 23, a German sport aircraft Caudron C.23, a French bomber biplane Lockheed C-23 Altair, an American military transport Short C-23 Sherpa, an American military transport Automobiles Sauber C23, a Swiss Formula One car Ships and boats HMS C23, a C-class submarine of the Royal Navy Maltese patrol boat C23, involved in the C23 tragedy C23 (C standard revision), a revision of the C programming language C-23 (card game), a collectible card game by Wizards of the Coast C23 road (Namibia) Bishop's Opening, a chess opening Caldwell 23, a spiral galaxy Gallbladder cancer List of compounds with carbon number 23 This disambiguation page lists articles associated with the same title formed as a letter–number combination.If an internal link led you here, you may wish to change the link to point directly to the intended article.