12E

12E may refer to:

Places

 * Road 12E, see List of highways numbered 12E
 * Tram 12e, a tramline in Lison; see Trams in Lisbon
 * 12e arrondissement (disambiguation)

Transportation

 * Hiller 12E, a helicopter
 * Lorraine 12E Courlis, an aero engine
 * South African Class 12E, an electric locomotive

Other uses

 * 12e Régiment blindé du Canada
 * 12e Régiment de Cuirassiers de France