Petrel can refer to
Petrel, a type of tube-nosed seabird The order Procellariiformes as a whole, including the true petrels and relatives
Aviation and rocketry Percival Petrel, a 1930s British communications aircraft Petrel (rocket), a British sounding rocket AUM-N-2 Petrel, an antisubmarine missile used by the U.S. Navy in the 1950s, later designated AQM-41A as a target drone
Ships , a name used by four United States Navy ships , an archaic form of "Petrel" used as a name by seven Royal Navy ships MV Petrel, a United States Bureau of Fisheries patrol boat in service from 1919 to 1934 that previously served in the United States Navy as , a research vessel Petrel (ship, 1928), a whaler, built in Oslo, left to rust after being beached in Grytviken, South Georgia
Geographic locations Petrel Base, an Argentine base in Antarctica Petrel Island (disambiguation) San Antonio de Petrel, a town in Chile Petrel, an alternate spelling for the town of Petrer in Alicante, Spain
Other uses Petrel (reservoir software), petroleum reservoir software Petrel (maxace knives), MaxAce Knives "Petrel" balisong knife