WS, Ws, or ws may refer to:

Businesses and organizations

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• Ware Shoals Railroad (reporting mark WS)
• WestJet (IATA airline code WS)
• Society of Writers to Her Majesty's Signet, in post-nomial abbreviation
• Williams Street, an production arm of Cartoon Network.

Places

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• WS postcode area, West Midlands, UK
• Samoa (ISO 3166-1 country code WS)
• Winschoten railway station, the Netherlandsm station code

Science and technology

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• .ws, the Internet country code top-level domain for Samoa
• ws:// WebSocket protocol prefix in a URI
• Watt second (Ws) or Joule, a unit of energy
• Web service, software system designed to support machine-to-machine interaction over the Web
• Werner syndrome, premature aging
• Williams syndrome, a developmental disorder
• WonderSwan, handheld game console

Sports

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• World Sailing, world governing body for the sport of sailing

See also

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• The W's, a 1990s Christian swing band
• WS FTP, a File Transfer Protocol client