OTS, OTs or Ots may refer to:

Arts and entertainment Orchestra at Temple Square, an LDS orchestra located in Salt Lake City, US Over-the-shoulder shot, a film technique

Organizations Companies Ocean Therapy Solutions, U.S. company making centrifuge pumps for oceanic oil spill cleanup

Government Office for Transportation Security, Philippines Office of Tax Simplification, a United Kingdom Treasury tax office Office of Technical Service, a division of the Central Intelligence Agency Office of Thrift Supervision, a U.S. Treasury Department agency Office of Transport Security, Australia Organization of Turkic States, international organization comprising prominent independent Turkic countries

Military Air Force Officer Training School, a U.S. Air Force training center Officers' Training School RAAF, a Royal Australian Air Force training center Officers Training School, Bahtoo, a Myanmar army training centre

Religion Ohr Torah Stone, an international Modern Orthodox organization Orthodox Theological Seminary, Kottayam, a seminary under the Indian Orthodox Church Order of the Solar Temple (French: Ordre du Temple solaire, OTS), French esoteric cult

Science and technology Octadecyltrichlorosilane, a chemical forming self-assembled monolayers OpenTimestamps, a cryptographic timestamping standard Operator Training Simulator, a simulation platform for industrial operator training Orbital Test Satellite, a European Space Agency program Organization for Tropical Studies, a U.S.-based group of biological research stations in Costa Rica TsO (tosylate), the anion of p-toluenesulfonic acid, a tosyl compound

Transportation MS Georg Ots, a ferry named for Georg Ots Anacortes Airport (IATA code: OTS), in Anacortes, Washington, US

Other uses Georg Ots (1920–1975), Estonian musician Izh (river) (Tatar: Otš), in Tatarstan, Russia Opportunity to see, a measure of the penetration of advertising OuT of Service

See also Off-the-shelf (disambiguation)