SF or Sf may refer to:
Locations San Francisco, California, United States Sioux Falls, South Dakota, United States Sidi Fredj, Algeria South Florida, an urban region in the United States Suomi Finland, former vehicular country code for Finland
Arts and entertainment Genres Speculative fiction (usually sf) Science fiction or sci-fi (usually SF)
Film and television Svensk Filmindustri, the Swedish film industry SF Film Finland, a Finnish film distributor SF Channel (Australia) Schweizer Fernsehen, a German-language television network in Switzerland Suomen Filmiteollisuus, a Finnish film production company
Music Sforzando (musical direction) or sf, a musical accent Subito forte, a musical notation for dynamics (music) Switchfoot, a band Sasha Fierce, on-stage alter ego of American entertainer Beyoncé, and namesake of her album I Am... Sasha Fierce
Other media Saikoro Fiction, a Japanese role-playing game system Street Fighter, a series of fighting video games by Capcom
Businesses and organizations Politics Salzburg Forum, European security intergovernmental organization Samoa First, a political party in Samoa Sinn Féin, an Irish political party Socialistisk Folkeparti, a political party in Denmark Sosialistisk Folkeparti, a splinter group of the Norwegian Labour Party
Other businesses and organizations Statsforetak, a type of Norwegian state enterprise SF Express, a Chinese multinational delivery services and logistics company SF Airlines, a Chinese cargo airline owned by SF Express SF Group, a cinema and entertainment venue operator in Thailand Salesforce, an American cloud computing company specializing in customer resource management Six Flags, an American amusement park company Six Flags (1961–2024), a defunct amusement park company that merged with Cedar Fair in 2024 SourceForge, a web-based service that offers a source code repository, download mirrors, bug tracking and other features Space forces, military service branches for space operations Special forces, military units trained to perform unconventional missions State Farm, an American insurance company Tassili Airlines (IATA designator SF) A common shorthand for "Standard Form", a designation used by the United States Office of Personnel Management for forms used across various government agencies
Science, math, and engineering DOH-5-hemiFLY (semi-fly; SF), a psychedelic drug Significant figures, numeric digits contributing meaningfully to measurement resolution Safety factor, the capacity of a system beyond expected or actual loads Small find, an artifact independent from other artifacts Spontaneous fission, a form of radioactive decay found in very heavy elements Square foot, unit of area Stacking fault, a dislocation in a crystal Stick figure, a very simple drawing of a human or other animal
Sports A common abbreviation for the U.S. city of San Francisco, California's major professional sports teams: San Francisco 49ers, the city's National Football League team San Francisco Giants, the city's Major League Baseball team Small forward, a position in basketball Stade Français, a French rugby union team based in Paris Superleague Formula, a former motorsport racing series Super Formula Championship, a Japanese motorsport racing series Sacrifice fly, a play in baseball Semi-finals, a round in elimination tournaments Scuderia Ferrari, an Italian Formula One team
Other uses San Francisco (sans-serif typeface), Apple's sans-serif and corporate typeface United States Air Force Security Forces, the ground combat, force protection and military police force of the U.S. Air Force United States Army Special Forces, special operations organization of the U.S. Army Selle Français, a French breed of horse A former hull classification symbol for a fleet submarine in the United States Navy Franklin Avenue Shuttle in New York City, sometimes signed as SF in documents
See also Garland SF-01 and Garland SF-03, fictional racing cars in Future GPX Cyber Formula