A19, A-19, etc. may refer to:A19, one of the Encyclopaedia of Chess Openings codes for the English Opening A19, a 2002 album by the Battlefield Band "A19", a song by Maxïmo Park from the Missing Songs album A19 light bulb, a common household bulb A19 road, a code used to identify a particular road in several countries A19 (Xinyi), a shopping mall in Taipei, Taiwan 122 mm gun M1931/37 (A-19), a Soviet field gun Aero A.19, a 1923 Czech fighter aircraft design Arrows A19, a Formula One car British NVC community A19, a plant community HLA-A19, a human serotype Saro A.19 Cloud, a 1930 British flying boat Subfamily A19, a rhodopsin-like receptors subfamily Vultee A-19, a 1939 American attack aircraft Apple A19, a mobile processor produced by Apple