R12

R12 may refer to:

Automobiles

 * BMW R12, a motorcycle
 * Renault 12, a French family car

Aviation

 * Bell R-12, an American utility helicopter
 * Caudron R.12, a French experimental biplane
 * Republic XR-12 Rainbow, an American experimental reconnaissance aircraft
 * R-12 Kassel/Rothwesten, a former United States Army Air Corps airfield in Germany
 * Rubik R-12 Kevély, a Hungarian training glider
 * Yakovlev R-12, a Soviet prototype reconnaissance aircraft

Roads

 * R12 road (Belgium)
 * R12 road (Ghana)
 * R-12 regional road (Montenegro)
 * R12 road (Russia)

Public transport

 * R12 (New York City Subway car)
 * R12 (Rodalies de Catalunya), a regional rail line in Catalonia, Spain
 * Kenilworth Avenue Line of the Washington Metropolitan Area Transit Authority

Vessels

 * HMS Contest (R12), a destroyer of the Royal Navy
 * HMS Hermes (R12), an aircraft carrier of the Royal Navy
 * HMS R12, a submarine of the Royal Navy
 * USS R-12 (SS-89), a submarine of the United States Navy

Other uses

 * R12 (cemetery), a Neolithic cemetery in Sudan
 * Dichlorodifluoromethane, a refrigerant
 * Ndombe language
 * R-12 Dvina, a Soviet ballistic missile
 * R12: Extremely flammable, a risk phrase
 * Small nucleolar RNA R12