SOF may refer to the
- Science Olympiad Foundation
- Scions of Fate
- Sea of Faith, a Christian liberal philosophical movement usually written 'SoF'
- Sound on film
- (Religious) Society of Friends
- Sofia Airport in the city of Sofia, Bulgaria (IATA airport code)
- Soldier of Fortune (disambiguation), usually the magazine
- Special Operations Force
- State of Fear, a 2004 techno-thriller novel by Michael Crichton
- Statute of frauds, requiring certain contracts be expressed in writing
- Stretton-on-Fosse
- Student of fortune, an online tutoring company
- Superior orbital fissure
- Swedish Orienteering Federation
- Squeal Of Fortune, Runescape