FS

Arts and entertainment

FS (musician) (real name Fred Sargolini), American dubstep producer and DJ from New York
FS Catalogue, a numbered list of all compositions by Carl Nielsen
FS Film, a Finnish film distributor
Flight simulator, a professional simulator of planes
- Flight simulation video game, a video game version of simulators
  - Microsoft Flight Simulator, an amateur flight simulator series
    - Microsoft Flight Simulator X (FSX), the 2006 edition
    - Microsoft Flight Simulator (2020 video game) (FS), the 2020 edition
Fox Sports (United States), the sports programming division of Fox Corporation
- Fox Sports 1 (FS1)
- Fox Sports 2 (FS2)

Fagoppositionens Sammenslutning, a Danish trade union federation
FamilySearch, a genealogical organization and website
Farmers' and Settlers' Association of New South Wales (F & S), Australia
Fortune Systems, a defunct American computer manufacturer
Frankfurt School of Finance & Management, a business school in Frankfurt, Germany
FS Services, an agricultural supply cooperative, now Growmark
Full Sail University, a university in Florida, US
Future Shop, a defunct Canadian consumer electronics retailer

Ferrocarril de Sóller, a railway on Majorca
Ferrovie dello Stato, Italian state railways
- Trenitalia, its subsidiary for operating passenger rail transport
First ScotRail, a British rail train operator
ItAli Airlines (former IATA code: FS), a former Italian airline (2003-2011)
Flyr (airline) (former IATA code: FS), a former Norwegian airline (2020-2023)

Feldspar, a group of silicate minerals
Fin-stabilized projectile, such as the APFSDS or HEAT-FS
Flank speed, a ship's true maximum speed
Frameshift mutation, a genetic mutation
Fujita scale (F-Scale), or Fujita-Pearson scale, a scale for rating tornado intensity
Full scale, in electronics and signal processing, the maximum amplitude a system can present
Marine flooding surface, a sharp contact between deep-water and shallow-water facies in sequence stratigraphy
Sampling rate (symbol $f_{s}$ ), in communications theory
Fourier series, a mathematical tool used for analyzing periodic functions

FS register, in X86fs computer architecture
File Separator, a character in the C0 and C1 control codes
File server, a form of disk storage
File system, in computer science and database theory
Flipnote Studio, a DSi animation software
Forward secrecy, a property of cryptographic systems
Fullscreen, a picture format in 4:3 aspect ratio, as opposed to widescreen
IBM Future Systems project a failed IBM project to develop a computer line to replace System/360
Feature structure, a set of attribute–value pairs

Felty's syndrome, autoimmune disease, with rheumatoid arthritis, enlargement of the spleen and too few neutrophils in the blood
Fibrin sealant, a type of surgical tissue adhesive used during surgery to control bleeding
Flight Surgeon, a physician who is responsible for the medical evaluation, certification and treatment of aviation personnel
Fractional shortening, of the heart
Formularium Slovenicum, Slovenian addendum to the European Pharmacopoeia

Freight and supply ship (FS), a US Army classification for a type of cargo ship
Fire support, artillery or close air support for combat operations
Flight Sergeant, a non-commissioned officer in some air forces
Flight Surgeon, physician primarily responsible for the medical evaluation, certification and treatment of aviation personnel
French Ship (FS), a NATO prefix for ships of the French Navy

Federal Standard 595, a United States federal standard defining color shades
Financial Secretary (Hong Kong)
For Sale (disambiguation)
Foundation Stage, term used for early childhood education in the UK
Franco's Spain, Spain under the leadership of Francisco Franco
French Southern Territories (FIPS PUB 10-4 territory code); excludes the Terre Adélie portion of Antarctica
Full service (disambiguation)