P54 may refer to:
Aircraft Percival P.54 Survey Prince, a British reconnaissance aircraft P.Z.L. P.54 Ryś, a Polish heavy fighter design project Vultee XP-54, an American prototype fighter aircraft
Vessels , a patrol vessel of the Argentine Navy , a submarine of the Royal Navy , a patrol vessel of the Indian Navy sold in 2000 , a patrol vessel of the Indian Navy commissioned in 2013
Other uses Papyrus 54, a biblical manuscript Peugeot 408 (P54), a crossover car P54, a state regional road in Latvia