FSF may refer to:

Organizations

Free Software Foundation The Free Software Foundation (FSF) is a 501(c)(3) non-profit organization founded by Richard Stallman on October 4, 1985. The organisation supports the free software movement, with the organization's preference for software being distributed ...

, an American non-profit organization with a mission to promote computer user freedom * Federal Security Force (Pakistan) * Federación de Sindicatos Ferroviarios, a defunct Argentine trade union *

Financial Stability Forum The Financial Stability Forum (FSF) was a group consisting of major national financial authorities such as finance ministries, central bankers, and international financial bodies. It was first convened in April 1999 in Washington. At the 2009 G20 ...

, a defunct international organization of financial regulators *

Flight Safety Foundation The Flight Safety Foundation (FSF) is a non-profit, international organization concerning research, education, advocacy, and communications in the field of aviation safety. FSF brings together aviation professionals to help solve safety problem ...

, an international independent, non-profit organization for research, education, and communications in the field of civil aviation flight safety * Föreningen Sveriges Filmfotografer, the Swedish Society of Cinematographers * Progressive Party, an Icelandic political party (in Icelandic: ''Framsóknarflokkurinn'') * Freiwillige Selbstkontrolle Fernsehen, German television rating content board.

Arts and entertainment

Folsom Street Fair Folsom Street Fair (FSF) is an annual Kink (sexuality), kink, leather subculture, and Paraphilia, alternative sexuality street fair, held in September that concludes San Francisco's "Leather Pride Week". The Folsom Street Fair, sometimes refe ...

, a street fair in San Francisco, California, United States *

Further Seems Forever Further Seems Forever is an American Rock music, rock band formed in 1998 in Pompano Beach, Florida. Over its initial eight-year run the band experienced several lineup changes, resulting in a different lead vocalist performing on each of their f ...

, a rock band * Fugitive Strike Force, a 2006 television series * ''

The Magazine of Fantasy & Science Fiction ''The Magazine of Fantasy & Science Fiction'' (usually referred to as ''F&SF'') is a U.S. fantasy fiction magazine, fantasy and science-fiction magazine, first published in 1949 by Mystery House, a subsidiary of Lawrence E. Spivak, Lawrence Spiv ...

'', also abbreviated ''F&SF'' *

Speculative fiction Speculative fiction is an umbrella term, umbrella genre of fiction that encompasses all the subgenres that depart from Realism (arts), realism, or strictly imitating everyday reality, instead presenting fantastical, supernatural, futuristic, or ...

(genre) containing the subgenre of ''fantasy/science fiction'' (F/SF) *

Science fantasy file:Warhammer40kcosplay.jpg, Cosplay of a character from the ''Warhammer 40,000'' tabletop game; one critic has characterized the game's setting as "action-oriented science-fantasy." Science fantasy is a hybrid genre within speculative fiction ...

(genre), a mixed genre of fantasy and science fiction elements * Festival of Slovenian Film, an annual film festival in

Portorož Portorož (; ) is a Slovenian Adriatic seaside resort and spa settlement located in the Municipality of Piran in southwestern Slovenia. Its modern development began in the late 19th century with the vogue for the first health resorts. In the earl ...

Slovenia Slovenia, officially the Republic of Slovenia, is a country in Central Europe. It borders Italy to the west, Austria to the north, Hungary to the northeast, Croatia to the south and southeast, and a short (46.6 km) coastline within the Adriati ...

Sports

Faroe Islands Football Association The Faroe Islands Football Association (; ), or FSF, is the governing body of all domestic football in the Faroe Islands, the highest level of which is the Faroe Islands Premier League. It also runs the Faroe Islands national teams for Faroe Islan ...

(Faroese: ') * Federação Sergipana de Futebol, the Football Federation of Sergipe, Brazil *

Football Supporters' Federation The Football Supporters' Federation (FSF) was an organisation representing football fans in England and Wales. It campaigned across a range of issues and supports fan representation on clubs' boards, lower ticket prices, and the introduction of ...

Fuerte San Francisco Fuerte San Francisco is a football club based in San Francisco Gotera, El Salvador that plays in the Primera División, the top flight of Salvadoran football. Nicknamed Los Comandos Azules (The blue commanders), the club has won two league sec ...

, a Salvadoran football club *

Sahrawi Football Federation The Sahrawi Football Federation (FSF) (, ) is the governing body of association football in Western Sahara, a territory that is disputed between Morocco and the Sahrawi Arab Democratic Republic. It was formed in 1989 and it is based in the Sahrawi ...

(Spanish: ') * São Toméan Football Federation (Portuguese: ') *

Senegalese Football Federation The Senegalese Football Federation (; FSF) is the governing body of football in Senegal. It is based in the capital of Senegal, Dakar, and was founded in 1960. The FSF aided in the development of football in Senegal, specifically for its profess ...

(French: ')

Other uses

* Familial Shar Pei fever * Fibrin-stabilizing factor * Flexible Support Fund in the United Kingdom *

Fourth suit forcing Fourth suit forcing (also referred to as fourth suit artificial; abbreviated as FSF or 4SF) is a contract bridge convention that allows responder to create, at his second turn to bid, a forcing auction. A bid by responder in the fourth suit, t ...

, a bidding convention in the game of contract bridge *

Free speech fights Free speech fights are struggles over free speech, and especially those struggles which involved the Industrial Workers of the World and their attempts to gain awareness for labor issues by organizing workers and urging them to use their collective ...

, a series of 20th-century labor-related conflicts in the United States *

Full state feedback Full state feedback (FSF), or pole placement, is a method employed in feedback control system theory to place the closed-loop poles of a Plant (control theory), plant in predetermined locations in the s-plane.* Placing poles is desirable because t ...

{{disambiguation