A12

A12, A.12 or A-12 may refer to:
* A-12 Shrike, a World War II-era American attack aircraft
* A-12 Avenger II, a Cold War-era American aircraft project that was cancelled prior to production
* Abrial A-12 Bagoas, a French experimental glider of the 1930s
* Aero A.12, a Czechoslovak light bomber built after World War I
* Aggregate series#A12, a German rocket design in World War II that was never constructed
* ATC code A12, a division of the Anatomical Therapeutic Chemical Classification System
* Fiat A.12, a 1916 Italian 6 cylinder liquid-cooled in-line engine
* HMS "A12", a British A class submarine of the Royal Navy
* Lockheed A-12, a high-altitude, high-speed reconnaissance aircraft manufactured for the CIA
* LSWR A12 class, a 1887 British steam locomotive modeland also :
* One of the "Encyclopaedia of Chess Openings" codes for the English Opening in chess

Roads

* A012, National Route A012 (Argentina)
* A12 autoroute, a major highway in France
* A12 road (England), a trunk road connecting London to Great Yarmouth
* A12 motorway (Netherlands)
* A12 highway (Lithuania)
* Bundesautobahn 12, an autobahn in eastern Germany connecting Berlin to the Polish border
* a national road in Latvia