FR
- fr – (s) French language (ISO 639-1 code)
- Fr – (s) Francium
- FR – (s) France (FIPS 10-4 country code; ISO 3166 digram)
- fra – (s) French language (ISO 639-2 code)
- FRA
- (i) Federal Railroad Administration
- (s) France (ISO 3166 trigram)
- FRAGO – (p) Fragmentary Order (military)
- FRAND – (a) Fair, reasonable, and non-discriminatory (concept in standards-setting and intellectual property law)
- FRCP
- (i) Federal Rules of Civil Procedure
- Fellow of the Royal College of Physicians
- FRICBM – (i) Full Range ICBM
- frr – (s) North Frisian language (ISO 639-2 code)
- FRR
- (s) Falls Road Railroad (reporting mark)
- (i) Federaţia Română de Radioamatorism (Romanian, "Romanian Amateur Radio Federation")
- Federaţia Română de Rugby (Romanian, "Romanian Rugby (Union) Federation")
- FRO – (s) Faroe Islands (ISO 3166 trigram)
- FRS
- (i) Fellow of the Royal Society
- U.S. Federal Reserve System
- FRSA – (i) Fellow of the Royal Society of Art
- fry – (s) West Frisian language (ISO 639-2 code)
- FRY – (i) Federal Republic of Yugoslavia
Read more about this topic: List Of Acronyms And Initialisms: F