P33, P-33 or P.33 may refer to:
Vessels , a corvette of the Argentine Navy , a patrol boat of the Ghana Navy , a P-class sloop of the Royal Navy , a submarine of the Royal Navy , ships of the Indian Navy
Other uses Boulton & Paul P.33 Partridge, a British prototype fighter aircraft Cochise County Airport, in Cochise County, Arizona, United States Consolidated XP-33, an American prototype fighter aircraft Papyrus 33, a biblical manuscript Phosphorus-33, a radioactive isotope of phosphorus P33, a state regional road in Latvia