P46

P46 or P-46 may refer to:

Vessels

 * ARA Gómez Roca, a corvette of the Argentine Navy
 * HMS Unruffled (P46), a submarine of the Royal Navy
 * INS Kuthar (P46), a corvette of the Indian Navy
 * SPANISH PATROL VESSEL Furor

Other uses

 * Curtiss XP-46, an American prototype fighter aircraft
 * Heckler & Koch UCP, a prototype pistol
 * P46 road (Ukraine)
 * Papyrus 46, a biblical manuscripts in Greek
 * Phosphorus-46, an isotope of phosphorus
 * P46, a Latvian state regional road