P51

The North American P-51 Mustang is an American World War II fighter aircraft.

P51 or P-51 may also refer to:

Vessels

 * ARA Bouchard, a patrol vessel of the Argentine Navy
 * HMS Unseen (P51), a submarine of the Royal Navy
 * INS Subhadra (P51), a patrol vessel of the Indian Navy
 * LÉ Róisín (P51), a patrol vessel of the Irish Naval Service
 * MALTESE PATROL BOAT P51

Other uses

 * BenQ-Siemens P51, a PDA smartphone
 * P-51 can opener, a larger version of the P-38 can opener issued by the United States Armed Forces
 * Papyrus 51, a biblical manuscript
 * Parker 51, a fountain pen
 * P51, a state regional road in Latvia
 * ThinkPad P51, a laptop in the ThinkPad P Series