12A

12A may refer to:

• Media content ratings including the following:
• 12A, a current certificate issued by the British Board of Film Classification
• 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
• Refrigerant HC-12a consisting of propane and isobutane, a replacement for R-12