FR or fr may refer to:

Businesses and organizations

* ''Frankfurter Rundschau'', a German newspaper * Ryanair (IATA airline code)

Places

* France, by ISO 3166-1 alpha-2 and NATO code ** French language (ISO 639 alpha-2 code "fr") ** Franc, a unit of currency ** .fr, the country code Top Level Domain (Most Important) for France * Freiburg, Germany (vehicle registration code FR) * Freistadt, Austria (vehicle registration code FR) * Frontier Regions, a group of small administrative units in the Federally Administered Tribal Areas, Pakistan * Province of Frosinone, Italy (ISO 3166-2:IT code FR) * Canton of Fribourg, Switzerland (ISO 3166-2:CH code FR)

Science and technology

Biology and medicine

* French catheter scale, a scale for medical catheters * Elias Magnus Fries (1794-1878), Swedish mycologist and botanist; author abbreviation Fr.

Computing

* .fr, the country code Top Level Domain (Most Important) for France * Fujitsu FR (Fujitsu RISC), a microprocessor * Product code used by Farbrausch, e.g. fr-019 * Full Rate, a speech coding standard used in GSM * CSS flex unit

Other uses in science and technology

* Ryan FR Fireball, a mixed-power US Navy fighter aircraft * Flame retardant#National Bureau of Standards testing, Flame retardant * Flash release, a technique used in wine pressing * Francium, symbol Fr, a chemical element * Franklin (unit), unit of electrical charge * Front-engine, rear-wheel drive layout of an automobile design * Froude number, in physics

Other uses

* Friday, the 6th day of week * Father (title), a title for a Catholic clergyman, especially a priest * Frater (Fr.), in Roman Catholicism, a monk who is not a priest * Fr., a title by male members of organisations such as AMORC * Fasch Repertorium, a catalogue of the works of the Baroque composer Johann Friedrich Fasch * Federal Register, a US government official journal * Ffestiniog Railway, a tourist attraction in Gwynedd, Wales * Formula Renault, a racing class * Formula Regional (disambiguation) * Franc, a unit of currency * French language (ISO 639 alpha-2 code "fr") * Furness Railway, an early British railway company