FRF may refer to:
- As a common abbreviation
- Faculty Research Fellow or faculty research fellow, a faculty member without tenure, a research fellow
- Financial Reporting Foundation, a body overseeing accounting in Malaysia
- Finn Rescue Force or Finnish Rescue Force (also FinnRescueForce or Finnrescueforce), e.g. part of international response to Hurricane Katrina
- Finnish Rugby Federation, governing body for rugby union in Finland, see Finnish Championship League
- Flight Readiness Firing or flight-readiness firing, a test on the Space Shuttle Main Engine
- Floating-point Register File or floating-point register file, a register file handling numbers in floating point
- Flood Relief Fund, a type of relief agency, set to raise funds after a flood
- Florida Retail Federation, supporter of the Republican Party of Florida
- Foundation for Religious Freedom, entity controlling the new Cult Awareness Network
- Frame Relay Forum, body defining frame relay specifications such as FRF.12
- French franc, former currency of France, ISO abbreviation FRF
- French Rugby Federation, governing body for rugby union in France
- Frequency Response Function or frequency response function, an analysis measurement of a vibration
- Fuji Rock Festival, music festival held in Naeba Ski Resort, in Niigata Prefecture, Japan.
- Romanian Football Federation (FRF, Federaţia Română de Fotbal), governing body for football in Romania
- As a special code
- Fairfield railway station (Greater Manchester), UK, station code FRF
- Francium fluoride, an inorganic chemical compound, symbol FrF
- Rhein-Main Air Base, U.S. military airbase in Germany, IATA code FRF