P33, P-33 or P.33 may refer to: * HMS P33, the name of two Royal Navy vessels - a patrol boat and a submarine * INS Abhay (P33), an anti-submarine corvette of the Indian Navy * P.33 Boulton Paul Partridge, a prototype biplane fighter that did not go into production * Papyrus 33, a manuscript of the Acts of the Apostles * Phosphorus-33 (P-33 or 33P), a radioactive isotope of phosphorus * Consolidated XP-33, a version of the Consolidated P-30 * P33, a road in Latvia * the FAA identifier for Cochise County Airport This disambiguation page lists articles associated with the same title formed as a letter-number combination. If an internal link led you here, you may wish to change the link to point directly to the intended article.