P57

P57 may refer to:

Aircraft

 * Partenavia P.57 Fachiro, an Italian civil utility aircraft
 * Percival P.57 Sea Prince, a British anti-submarine trainer
 * Tucker XP-57, a proposed American fighter

Vessels

 * HMS Universal (P57), a submarine of the Royal Navy
 * INS Sunayna (P57), a patrol vessel of the Indian Navy
 * P57 Kasos, a HSY-55-class gunboat of the Hellenic Navy

Other uses

 * P57 (glycoside), an anorectic
 * BRM P57, a Formula One racing car
 * Cyclin-dependent kinase inhibitor 1C
 * Papyrus 57, a biblical manuscript
 * P57, a state regional road in Latvia