SRF

• Sudan Revolutionary Front, alliance of armed groups formed in 2011 • Syria Revolutionaries Front, formed in December 2013 • Schweizer Radio und Fernsehen, German-language broadcaster in Switzerland • SRF Limited, an Indian manufacturing company • SENS Research Foundation, on the medicine of ageing, Mountain View, California, USA • Supercentenarian Research Foundation, on why supercentenarians live longer than most and why they die • Sevin Rosen Funds, a Texas-based venture capital firm ==Science and technology==

• Self resonant frequency, of an electronic component • Serum response factor, in genetics • Server Response File, ATL Server • Solid recovered fuel, from waste • Superconducting radio frequency technology, superconductors in RF devices • .srf, computer file extension for a raw image file ==Other==

• Self-Realization Fellowship, spiritual organization • Silk Road Fund, Chinese state backed investment fund • SleepResearch Facility, a musician • Spec Racer Ford, a class of racing car • State revolving fund, a type of fund administered by a US state • Scholar Rescue Fund, a fund that provides fellowships to scholars whose lives are threatened in their home countries • Strategic Rocket Forces of the Russian Federation • Systematic reconnaissance flight, a scientific method in wildlife survey