FRS

FRS is an abbreviation which can stand for various phrases:

* The Facility Registry System of the United States Environmental Protection Agency
* Family Radio Service, a personal radio service utilizing the UHF band
* Family Resources Survey
* The Federal Reserve System of United States banks
* Fellow of the Royal Society, a title awarded to distinguished scientists who are British, Commonwealth or Republic of Ireland citizens
* Ffestiniog Railway Society the volunteer organization that helps run the Ffestiniog Railway
* Filtered Rayleigh Scattering, a method for measuring the flow rate of a fluid based on scattering of light
* One of a series of Financial Reporting Standards, issued by the United Kingdom's Accounting Standards Board
* Fisheries Research Services, an agency of the Scottish Executive
* Fixed Repeating Schedule, a production scheduling methodology
* Fleet Replacement Squadron, a training squadron for naval aviators.
* Förde Reederei Seetouristik (Fast Reliable Seaways) - a German based shipping company operating in international sea areas
* Forum des républicains sociaux, a right-wing French political party
* Free radical substitution, a substitution reaction involving free radicals as a reactive intermediate
* Freely redistributable software
* The ISO 639/639-2 language code for Saterland or East Frisian language
* Fragment Separator, device used to focus and separate products from the collision of relativistic ion beams.

FRS may also refer to:
* File Replication Service by Microsoft
* Forsinard railway station, a railway station in Scotland
* Free Radical Scavenger, a type of powerful antioxidant generally derived from plants
* Ready for Service
* Mundo Maya International Airport (IATA Code: FRS) in Flores, Guatemala