RF is an abbreviation for radio frequency.

Rf or RF may also refer to:

Arts and entertainment

  • Red Faction (series), a series of revolution video games
  • Rinforzando, , in music notation
  • RF Online, an online RPG made by CCR
  • RFTV, a Brazilian television network

Business

  • Aero K, IATA code (2020–present)
  • Florida West International Airways, IATA code (1984–2017)
  • Radio Nippon, (a.k.a. RF Radio Nippon, from its call sign JORF), a radio station in Yokohama, Japan
  • Regions Financial Corporation, NYSE stock symbol
  • Registered association (Finland) (Registrerad förening), Finnish legal status for a non-profit organization
  • Royalty-free, in business

Government and politics

  • France (République française)
  • Russian Federation
  • Rhodesian Front, former political party in Rhodesia

Biology and medicine

  • Rheumatic fever, an inflammatory disease
  • Release factors RF1, RF2, RF3, proteins
  • Reticular formation, in the brainstem
  • Rheumatoid factor, an antibody
  • Receptive field, the response characteristic of a neuron
  • Respiratory failure
  • Risk factor

Other uses in science and technology

  • Representative fraction
  • Rest frame
  • Retardation factor in a chromatographic system
  • Radiative forcing, the change in energy flux in the atmosphere caused by climate change factors
  • Random forest, an ensemble learning method in data science
  • Rutherfordium, symbol Rf, a chemical element
  • Canon RF mount, interchangeable camera lens mount

Sports

  • Range Factor, a baseball statistic
  • Right fielder, a defensive position in baseball
  • Roger Federer, a Swiss tennis player
  • Swedish Sports Confederation (, RF), the umbrella organisation for Swedish sports