SF may refer to:

Locations

San Francisco San Francisco (; Spanish for " Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the fourth most populous in California and 17t ...

, 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 ...

, 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, nat ...

(usually ''sf'') **

Science fiction Science fiction (sometimes shortened to Sci-Fi or SF) is a genre of speculative fiction which typically deals with imaginative and futuristic concepts such as advanced science and technology, space exploration, time travel, parallel uni ...

or sci-fi (usually ''SF'')

In film and television

* , the Swedish film industry **

SF Film Finland SF Film Finland Oy (formerly FS Film Oy) is a Finnish film distributor established in 2000. It is part of Bonnier Group and a subsidiary of AB Svensk Filmindustri. SF Film Finland is the leading film distributor in Finland, with market shares of ...

, 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 depend ...

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, ...

, 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 requires ...

, a Japanese role-playing game system * ''

Street Fighter , commonly abbreviated as ''SF'' or スト (''Suto''), is a Japanese media franchise centered on a series of fighting video and arcade games developed and published by Capcom. The first game in the series was released in 1987, followed by six ...

'', a series of fighting video games by Capcom

Businesses and organizations

In politics

* Salzburg Forum, European security intergovernmental organization *

Sinn Féin Sinn Féin ( , ; en, " eOurselves") is an Irish republican and democratic socialist political party active throughout both the Republic of Ireland and Northern Ireland. The original Sinn Féin organisation was founded in 1905 by Arthur Gr ...

, 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 Salesforce, Inc. is an American cloud-based software company headquartered in San Francisco, California. It provides customer relationship management (CRM) software and applications focused on sales, customer service, marketing automation, a ...

, an American cloud computing company specializing in customer resource management *

SourceForge SourceForge is a web service that offers software consumers a centralized online location to control and manage open-source software projects and research business software. It provides source code repository hosting, bug tracking, mirroring ...

, 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 equi ...

, 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 lar ...

, an American insurance company * Tassili Airlines (IATA designator SF) *

Six Flags Six Flags Entertainment Corporation is an American amusement park corporation, headquartered in Arlington, Texas. It has properties in Canada, Mexico, and the United States. Six Flags owns the most theme parks and waterparks combined of any a ...

* A common shorthand for "Standard Form", a designation used by the

United States Office of Personnel Management The United States Office of Personnel Management (OPM) is an independent agency of the United States Federal Government that manages the US civilian service. The agency provides federal human resources policy, oversight and support, and tends ...

for forms used across various government agencies

In science, math, and engineering

Significant figures Significant figures (also known as the significant digits, ''precision'' or ''resolution'') of a number in positional notation are digits in the number that are reliable and necessary to indicate the quantity of something. If a number expres ...

, 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 breakd ...

, a form of radioactive decay found in very heavy elements *

Square foot The square foot (plural square feet; abbreviated sq. ft, sf, or ft2; also denoted by '2) is an imperial unit and U.S. customary unit (non- SI, non- metric) of area, used mainly in the United States and partially in Canada, the United Kingdom, B ...

, unit of area * Stacking fault, a dislocation in a crystal

In sports

* A common abbreviation for the U.S. city of

San Francisco, California San Francisco (; Spanish for " Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the fourth most populous in California and 17t ...

's major professional sports teams: **

San Francisco 49ers The San Francisco 49ers (also written as the San Francisco Forty-Niners) are a professional American football team based in the San Francisco Bay Area. The 49ers compete in the National Football League (NFL) as a member of the league's Nationa ...

, the city's National Football League team **

San Francisco Giants The San Francisco Giants are an American professional baseball team based in San Francisco, California. The Giants compete in Major League Baseball (MLB) as a member club of the National League (NL) West division. Founded in 1883 as the New Yo ...

, the city's Major League Baseball team *

Small forward The small forward (SF), also known as the three or swingman, is one of the five positions in a regulation basketball game. Small forwards are typically shorter, quicker, and leaner than power forwards and centers but taller, larger, and stronge ...

, 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) an ...

, 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 single-elimination, knockout, or sudden death tournament is a type of elimination tournament where the loser of each match-up is immediately eliminated from the tournament. Each winner will play another in the next round, until the final matc ...

, a round in elimination tournaments *

Scuderia Ferrari Scuderia Ferrari 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 reference to their logo. ...

, an Italian Formula One team

Other uses

San Francisco (sans-serif typeface) San Francisco is a neo-grotesque typeface made by Apple Inc. It was first released to developers on November 18, 2014. It is the first new typeface designed at Apple in nearly twenty years and has been inspired by Helvetica and DIN. The macOS ...

, Apple's sans-serif and corporate typeface *

United States Air Force Security Forces The United States Air Force Security Forces (SF) are the ground combat force and military police service of the U.S. Air Force and U.S. Space Force. USAF Security Forces (SF) were formerly known as Military Police (MP), Air Police (AP), and Se ...

, the ground combat, force protection and military police force of the U.S. Air Force *

United States Army Special Forces The United States Army Special Forces (SF), colloquially known as the "Green Berets" due to their distinctive service headgear, are a special operations force of the United States Army. The Green Berets are geared towards nine doctrinal mi ...

, special operations organization of the U.S. Army * , a French breed of horse * A former

hull classification symbol The United States Navy, United States Coast Guard, and United States National Oceanic and Atmospheric Administration (NOAA) use a hull classification symbol (sometimes called hull code or hull number) to identify their ships by type and by ...

for a fleet submarine in the United States Navy