FRF may refer to:

• Fairfield railway station (Greater Manchester), in England
• Rhein-Main Air Base (FRF is its OACI airport codename) a former United States airbase in Germany, near Frankfurt.
• ISO 3166-2:FR-F (Centre-Val de Loire)

• Faculty research fellow

• Romanian Football Federation (Romanian: Federaţia Română de Fotbal)
• Foundation for Religious Freedom, the entity controlling the New Cult Awareness Network
• Free Russia Forum, a conference of the Russian opposition

• Francium fluoride (FrF), a hypothetical fluoride of the highly radioactive element francium
• Frequency response function
• Frequency reuse factor

• French franc (French: Franc Français), the currency of France in use before the Euro
• Fuji Rock Festival, in Niigata Prefecture, Japan

• FFR (disambiguation)
• RFF (disambiguation)