4A

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
Associated Actors and Artistes of America, also known as 4As, federation of American trade unions
Calabarzon or Region IV-A, a Region in the Philippines
Pixel 4a, an Android smartphone
Vermont Route 4A, a highway in Vermont, U.S.
Zeolite 4A, a sodium-type molecular sieve

See also