RF
Rf or RF is an abbreviation for:
Science and technology
- Radiative forcing, a measure of the change in balance of the energy absorbed and emitted by the Earth's atmosphere
- "Rate of flow", as in Volumetric flow rate
- Radio frequency
- RF connectors, a type of electrical connectors designed to work at radio frequencies
- Random forest, a machine learning algorithm
- Receptive field, a term used in neuroscience referring to the kinds of stimuli to which a neuron is sensitive
- Recombinant frequency, a term used in genetics to measure genetic linkage
- Register file, an array of processor registers in a CPU
- Retardation factor (or retention factor), designated as Rf, a term used in chromatography
- Reticular formation
- Rheumatoid factor, a blood test used to diagnose rheumatoid arthritis
- Roman foot, an ancient Roman unit of measurement
- Rutherfordium, a chemical element
- Release factor
Politics
Sports
Fiction and gaming
- Rumble Fighter, a multiplayer online fighting game published by OGPPlanet
- Red Faction, a first-person shooter game that was released in 2001 by THQ and Volition
- RF Online, an online RPG made by CCR
- Ralph Furley, the character played by Don Knotts on the 1977-84 TV series Three's Company
Economics
Other
- South Vietnamese Regional Force, a militia formed during the Vietnam War
- Rinforzando, a directive in sheet music
- RF, a Mazda piston engine
- RF Generation, a video gaming website
- .рф, the Cyrillic alphabet-only top-level domain of the Russian Federation
- Radio Nippon, a Japanese radio station in the vicinity of Tokyo - JORF
- RF, the IATA code for Florida West International Airways
- RF Regal Four, a 39 seat single deck bus, built for London Transport between 1951 and 1954, and in service until the late 1970s
- Rascal Flatts, an American country music band
- Roskilde Festival, a festival held south of Roskilde in Denmark and is one of the six biggest annual music festivals in Europe