FSF
- Familial Shar Pei fever
- Faroe Islands Football Association
- Federación de Sindicatos Ferroviarios
- Federal Security Force (Pakistan)
- Federação Sergipana de Futebol
- Females who have sex with females
- Festival of Slovenian Film
- Fibrin-stabilizing factor
- Financial Stability Forum
- Flexible Support Fund
- Flight Safety Foundation
- Folsom Street Fair
- Football Supporters' Federation
- Fourth suit forcing
- Free Software Foundation
- Free speech fights
- Fuerte San Francisco
- Fugitive Strike Force
- Full state feedback
- Further Seems Forever
- Portorož
- Progressive Party (Iceland)
- Sahrawi Football Federation
- Science fantasy
- Senegalese Football Federation
- Slovenia
- Society of Swedish Authors in Finland
- Speculative fiction
- Swedish Society of Cinematographers
- São Toméan Football Federation