12B (disambiguation)
# 12B (disambiguation)

12B is a 2001 Tamil movie.

12B may also refer to:

* New York State Route 12B, a state highway in the central part of New York
* Missouri Route 12B
* Nebraska Spur 12B
* 12B, a bus route in Chennai
* WASP-12b, an extrasolar planet
* HAT-P-12b, an extrasolar planet
* Boron-12 $(^{12}B),$ an isotope of boron
* 12B, a short-lived Mazda Wankel engine
* 12B United States MOS enlisted (military occupational specialty) for "Combat Engineer"
