TOS, tos, ToS, or TOs commonly refers to:

  • Terms of service, the legal agreements between service providers and the service consumers

TOS, tos, ToS, or TOs may also refer to:

Chemistry

  • Tosyl, a chemical group
  • Gy's sampling theory (abbreviation)

Entertainment

  • Star Trek: The Original Series, a name retroactively applied to the 1960s science fiction TV series originally known as Star Trek
  • Temple of Shadows, 2004 album by Angra
  • T·O·S (Terminate on Sight), 2008 album by G-Unit
  • Town of Salem, a social deduction game published by BlankMediaGames in 2014
  • Tree of Savior, a multiplayer online role playing game published by IMC Games in 2016

Medicine

  • Thoracic outlet syndrome, a medical condition
  • Toxic oil syndrome, caused by consuming non-food grade oil

Organizations

  • The Oceanography Society
  • Theosophical Order of Service, an international organization
  • Temple of Set, an occult society
  • Tennessee Ornithological Society
  • Trucial Oman Scouts, UK force raised in Oman in 1951
  • Television Oita System, a television station in Oita Prefecture, Japan

Other uses

  • TOS-1, a Soviet thermobaric weapon
  • Atari TOS, or The Operating System, the operating system of the Atari ST range of computers
  • TOS/360, or Tape Operating System/360
  • Tam o' shanter (cap), a traditional Scottish bonnet
  • Terminal Operating System, controlling cargo movement
  • Testament of Solomon, a pseudepigraphical composite text ascribed to King Solomon
  • Type of service, a field in the header of IPv4 packets
  • Highland Totonac language (ISO 639-3 code: iso)
  • Tromsø Airport, Norway (IATA code: ISO)

See also

  • Toos (disambiguation)
  • Toss (disambiguation)