SF

SF may refer to:

• San Francisco, California, United States

In arts and entertainment

• Science fiction
• Speculative fiction

In film and television

• Svensk Filmindustri, the Swedish film industry
• SF Channel (Australia)
• Schweizer Fernsehen, a German-language television network in Switzerland
• Suomen Filmiteollisuus, a Finnish film production company
• SF Film Finland, a Finnish film distributor
• SF Film (Danish company), a Danish film distributor of The Journals of Knud Rasmussen

In music

• Sforzando (musical direction) or sf, a musical accent
• Subito forte, a musical notation for dynamics (music)
• Switchfoot, a band

Other uses in arts and entertainment

• Street Fighter, a series of fighting games by Capcom

Businesses and organizations

• Statsforetak, a type of Norwegian state enterprise
• SF Express, a Chinese delivery services company
  • SF Airlines, a Chinese cargo airline owned by SF Express
• SourceForge, a web-based service that offers a source code repository, download mirrors, bug tracking and other features
• Tassili Airlines (IATA designator SF)

In politics

• Sinn Féin, an Irish political party
• Socialistisk Folkeparti, a political party in Denmark
• Sosialistisk Folkeparti, a splinter group of the Norwegian Labour Party
• Stormfront (website), a white-supremacist website

In science, math, and engineering

• Significant figures, digits of a number that are meaningful and contribute to measurement resolution
• Safety factor, the capacity of a system beyond expected or actual loads
• Spontaneous fission, a form of radioactive decay found in very heavy elements

In sports

• Small forward, a position in basketball
• Stade Français, a French rugby union team based in Paris
• Superleague Formula, a former motorsport racing series
• Sacrifice fly, a play in baseball

Other uses

• United States Air Force Security Forces, force protection and military police of the U.S. Air Force
• Selle Français, a French breed of horse
• Special Forces, military units trained to perform unconventional missions
• A former hull classification symbol for a fleet submarine in the United States Navy

See also

• Garland SF-01 and Garland SF-03, fictional racing cars in Future GPX Cyber Formula
• All pages beginning with "SF"