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SF

Last updated February 02, 2026

SF may refer to:

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

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

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
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

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
Spontaneous fission, a form of radioactive decay found in very heavy elements
Square foot, unit of area
Stacking fault, a dislocation in a crystal
S.F., an acronym name for stick figures

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

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 S^F in documents