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TOS may refer to:


  • Terms of service, rules by which one must agree to abide by in order to use a service; unless in violation of consumer protection laws, such terms are usually legally binding



Video games[edit]



  • Thoracic outlet syndrome, a syndrome involving compression of the superior thoracic outlet, leading to the compression of the neurovascular bundle passing between the anterior scalene and middle scalene
  • Toxic oil syndrome, the name given to a disease outbreak in Spain in 1981, which killed over 600 people


  • Oceanography Society, a non-profit society founded in 1988, based in Rockville, Maryland, U.S. and incorporated in the District of Columbia
  • Theosophical Order of Service, an international organization founded in 1908 by Annie Besant, the second International President of the Theosophical Society
  • Temple of Set, an initiatory occult society claiming to be the world's leading left-hand path religious organization; it professes Setian philosophy and magical practice
  • Tennessee Ornithological Society
  • Trucial Oman Scouts, The Trucial Oman Scouts was a paramilitary force that the British raised in 1951 as the Trucial Oman Levies, to serve in the Trucial States.

Other uses[edit]