SF may refer to:

Locations

* San Francisco, California, United States * Sidi Fredj, Algeria *

South Florida South Florida is the southernmost region of the U.S. state of Florida. It is one of Florida's three most commonly referred to directional regions; the other two are Central Florida and North Florida. South Florida is the southernmost part of th ...

, an urban region in the United States * Suomi Finland, former vehicular country code for Finland

In arts and entertainment

Genres

Speculative fiction Speculative fiction is a term that has been used with a variety of (sometimes contradictory) meanings. The broadest interpretation is as a category of fiction encompassing genres with elements that do not exist in reality, recorded history, na ...

(usually ''sf'') ** Science fiction or sci-fi (usually ''SF'')

In film and television

* , the Swedish film industry ** SF Film Finland, a Finnish film distributor * SF Channel (Australia) * , a German-language television network in Switzerland * , a Finnish film production company

In music

* Sforzando (musical direction) or sf, a musical accent * ''Subito forte'', a musical notation for

dynamics (music) In music, the dynamics of a piece is the variation in loudness between notes or phrases. Dynamics are indicated by specific musical notation, often in some detail. However, dynamics markings still require interpretation by the performer dependin ...

Switchfoot Switchfoot is an American rock band from San Diego, California. The band's members are Jon Foreman (lead vocals, guitar), Tim Foreman (bass guitar, backing vocals), Chad Butler (drums, percussion), and Jerome Fontamillas (guitar, keyboards, back ...

, 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 ''Saikoro Fiction'' ( ja, サイコロ・フィクション, "Dice Fiction"; abbreviated "SF") is a Japanese role-playing game universal system developed by and presented by (''Bouken Kikaku-Kyoku''). Core mechanics Saikoro Fiction require ...

, a Japanese role-playing game system * '' Street Fighter'', a series of fighting video games by Capcom

Businesses and organizations

In politics

* Salzburg Forum, European security intergovernmental organization * Sinn Féin, an Irish political party * , a political party in Denmark * , a splinter group of the Norwegian Labour Party

Other businesses and organizations

* , 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 * 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 Special forces and special operations forces (SOF) are military units trained to conduct special operations. NATO has defined special operations as "military activities conducted by specially designated, organized, selected, trained and equip ...

, military units trained to perform unconventional missions *

State Farm State Farm Insurance is a large group of mutual insurance companies throughout the United States with corporate headquarters in Bloomington, Illinois. Overview State Farm is the largest property and casualty insurance provider, and the la ...

, an American insurance company * Tassili Airlines (IATA designator SF) * Six Flags * A common shorthand for "Standard Form", a designation used by the United States Office of Personnel Management for forms used across various government agencies

In science, math, and engineering

* Significant figures, numeric digits contributing meaningfully to measurement resolution * Safety factor, the capacity of a system beyond expected or actual loads *

Spontaneous fission Spontaneous fission (SF) is a form of radioactive decay that is found only in very heavy chemical elements. The nuclear binding energy of the elements reaches its maximum at an atomic mass number of about 56 (e.g., iron-56); spontaneous breakdo ...

, a form of radioactive decay found in very heavy elements * Square foot, unit of area * Stacking fault, a dislocation in a crystal

In 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 Stade Français Paris Rugby () is a French professional rugby union club based in the 16th arrondissement of Paris. The club plays in the Top 14 domestic league in France and is one of the most successful French clubs of the modern era. The ...

, a French rugby union team based in Paris *

Superleague Formula Superleague Formula was an open wheel single seater motor racing formula, which started in 2008, at Donington Park in the United Kingdom. The league introduced team sponsorship by association football clubs. It used the slogan 'The Beautiful ...

, a former motorsport racing series *

Super Formula Championship The Japanese Super Formula Championship is a formula racing series. It is considered as being the top level of single-seater racing in Japan and regional motorsports in Asia. The series is sanctioned by the Japan Automobile Federation (JAF) and ...

, a Japanese motorsport racing series *

Sacrifice fly In baseball, a sacrifice fly (sometimes abbreviated to sac fly) is defined by Rule 9.08(d): "Score a sacrifice fly when, before two are out, the batter hits a ball in flight handled by an outfielder or an infielder running in the outfield in fair o ...

, a play in baseball * Semi-finals, a round in elimination tournaments *

Scuderia Ferrari Scuderia Ferrari Società per Azioni, S.p.A. () is the racing division of luxury Italian auto manufacturer Ferrari and the racing team that competes in Formula One racing. The team is also known by the nickname "The Prancing Horse", in refere ...

, 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 * , a French breed of horse * A former hull classification symbol for a fleet submarine in the United States Navy