Other Uses
- Safety factor
- Schweizer Fernsehen, a German-language television network in Switzerland
- United States Air Force Security Forces
- Selle Français, a French breed of horse
- Significant figures
- Speculative fiction
- Spontaneous fission, a nuclear decay route in which a superheavy nucleus splits into two
- Statsforetak, a type of Norwegian state enterprise
- Street Fighter, a series of fighting games by Capcom
- Suomen Filmiteollisuus, a Finnish film production company
- SF, conventional country code for Finland until 1993
- Svensk Filmindustri, the Swedish film industry
- Switchfoot, a band
- Tassili Airlines' IATA airline designator
- Subito forte, a musical notation for dynamics
- SF, a former Hull classification symbol for a Fleet Submarine in the United States Navy
- SF Channel (Australia)
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