4A or IV-A may refer to : 4A, Ararat International Airlines' IATA airline designator 4A, a series of Toyota A engine produced by Toyota Motor Corporation (1982-2002) 4A, the production code for the 1974–75 Doctor Who serial Robot 4A Centre for Contemporary Asian Art, Sydney, Australia 4A Engine, a video game engine developed by 4A Games 4A Games, a video game development company in Ukraine Calabarzon or Region IV-A, a province in Philippines Pixel 4a, an Android smartphone Vermont Route 4A, a highway in Vermont, U.S. See also 4A/OP, a radiative transfer model for the infrared Long March 4A, a Chinese rocket Stalag IV-A, a German prisoner of war camp TI-99/4A, a 1981 home computer AAAA (disambiguation) A4 (disambiguation) Iva (disambiguation)