RSF

RSF may refer to:

Entertainment and sports

 * Rainbow Serpent Festival, an arts, music and lifestyle festival in Victoria, Australia
 * Referee stopped fight, in boxing
 * Right Said Fred, British music band
 * Royal straight flush, a hand in poker
 * RSF, a French synthesizer manufacturer. See RSF Kobol for an example.
 * Russian Ski Federation

Military

 * Rhodesian Security Forces, the military and security forces of the government of former Rhodesia (1964–1980)
 * Royal Scots Fusiliers, former line infantry regiment of the British Army (1678–1959)
 * Rapid Support Forces, paramilitary forces formerly operated by the government of Sudan
 * Republican Security Forces, a fictional fascist militia in the British science fiction series Doctor Who

Organizations

 * Religious Society of Friends, the Quakers
 * Reporters Sans Frontières; see: Reporters Without Borders
 * Republican Sinn Féin, a small political party in Ireland
 * Road Safety Foundation in the UK and Ireland
 * Russell Sage Foundation, a philanthropic foundation and publisher
 * Russian Socialist Federation of the Socialist Party of America

Science and technology

 * Resource selection function, in ecology

Other uses

 * Rancho Santa Fe, a settlement in California
 * Recovery Support Function, a component of the National Disaster Recovery Framework (NDRF)
 * Rentable Square Feet, a measure of floor area (building)