SFF may refer to:
Arts
- Science (or speculative) fiction and fantasy; see Speculative fiction
- Sarajevo Film Festival, in Bosnia and Herzegovina
- Saraqusta Film Festival, in Spain
- Sydney Film Festival, in Australia
- subito fortissimo (sff), a dynamic marking in music
Businesses and organizations
- Science Festival Foundation, organizers of the 2008 World Science Festival
- Shooters, Fishers and Farmers Party, an Australian political party
- Small Form Factor Committee, an electronics industry group
- Space Frontier Foundation, an American space advocacy non-profit organization
- Spiritual Frontiers Fellowship, an American not-for-profit volunteer organization
- Stone Family Foundation, a charity
Military
- Special Field Force, a Namibian paramilitary police unit
- Special Frontier Force, an Indian paramilitary special force
Sports
Science and technology
- Small form factor PC, a desktop computer with minimal volume and footprint
- Standard flowgram format, a binary file format to encode results of pyrosequencing
Other uses
- Felts Field (IATA airport code: SFF), an airport near Spokane, Washington, US
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