12A

12A may refer to:


 * Media content ratings including the following:
 * 12A issued by the British Board of Film Classification
 * PG-12, the forerunner to the 12A classification, documented at History of British film certificates
 * 12A issued by the Irish Film Classification Office
 * 12A issued in Malta and Nigeria, documented at Motion picture content rating system
 * A type of Mazda Wankel engine
 * Any of the several highways numbered 12A