SWP or swp may refer to:
Businesses and organisations California State Water Project, an American public utility German Institute for International and Security Affairs () Saskatchewan Wheat Pool, Canadian grain firm Socialist Workers Party (disambiguation), various political parties South Wales Police, a British constabulary Southwest Pennsylvania Railroad, United States (by reporting mark) SWAPO, political party and former independence movement in Namibia, obsolete UNDP country code Wikimedia Polska () Association "Polish Community", ()
Computing Scientific WorkPlace, a mathematics tool with LaTeX support Single Wire Protocol .swp, a swap file used by Vim
Publications PEF Survey of Palestine, a series of maps (1872–1880) Südwest Presse, a German newspaper (founded 1946)
Other uses Skill with prize, a category of slot machine Sherwin-Williams Paints, a line of paint sold by Sherwin-Williams Swiss Water Process, a method of coffee decaffeination