RF may be:

• RF is the IATA code for Florida West International Airways

Rf or RF may stand for:

• Radio frequency, a term in broadcasting.
• Volumetric flow rate/"rate of flow" (Rf).
• RF connectors, electrical connectors designed to work at radio frequencies.
• Red Faction, a first-person shooter game that was released in 2001 by THQ and Volition.
• RF, a Mazda piston engine.
• Rheumatoid factor, a blood test used to diagnose rheumatoid arthritis.
• Right fielder, a defensive position in baseball.
• Russian Federation, Russia, formerly part of the USSR.
• France (République française).
• Rutherfordium, the chemical element.
• Rinforzando, a directive in sheet music.
• RF (practical joke) as practiced at California Institute of Technology.
• RF Online an online rpg made by CCR.
• Retention factor value (Rf), a parameter used to identify or distinguish different chemicals in paper chromatography.

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