C19

C19 or C-19 may refer to:

Transportation

 * HMS Birmingham (C19), a member of the first group of five ships of the British Town-class light cruisers
 * C-19 Alpha, designation of 3 modified Northrop Alpha Type 2 aircraft purchased by the US Army Air Corps in 1931
 * Boeing C-19, a military designation for the Boeing 747-100 series of aircraft
 * Cierva C.19, a 1929 autogyro built in England
 * HMS C19, a 1909 British C-class submarine
 * Sauber C19, a 2000 racing car

Other uses

 * 19th century
 * Iceberg C-19, an iceberg that broke off the Ross Ice Shelf in 2002 and which broke into two parts, C-19A ("Melting Bob") and C-19B, in 2003
 * Caldwell 19 (IC 5146, the Cocoon Nebula), a reflection/emission nebula in the constellation Cygnus
 * Carbon-19 (C-19 or 19C), an isotope of carbon
 * IEC 60320 C19, an electrical power connector
 * French Defence (Encyclopaedia of Chess Openings code)
 * Malignant neoplasm of rectosigmoid junction (ICD-10 code); See Colorectal cancer
 * Colt Canada C19 standard issue bolt-action rifle of the Canadian Rangers
 * C19: The Society of Nineteenth-Century Americanists, an academic organization