# FF

FF, Ff, fF or ff may refer to:

## Arts and entertainment
### Games

* Fatal Frame, a survival horror video game series
* Fatal Fury, a fighting video game series
* Final Fantasy, a role-playing video game series
* Final Fight, a beat 'em up video game series
* Fortress Forever, a mod for the first-person shooter video game Half-Life 2
* Fossil Fighters, a role-playing video game series
* Free Fire, a battle royale video game by Garena
* FusionFall, a defunct Cartoon Network-themed MMORPG

### Music

* Fortissimo (ff), a dynamic indicator in music for "very loud"
* Fear Factory, an American metal band
* Fleet Foxes, an American indie folk band
* Foo Fighters, an American rock band
* Franz Ferdinand (band), a Scottish rock band
* Freestyle Fellowship, an American hip hop group

### Movies

* Fast & Furious, a media franchise centered on a series of action films that are largely concerned with illegal street racing
* Fantastic Four

### Other media

* ff – Südtiroler Wochenmagazin, an Italian weekly journal published in German language
* Fantastic Four, a superhero team appearing in comic books published by Marvel Comics
* Future Foundation, a fictional superhero team that replaced the Fantastic Four after the death of Johnny Storm, also published by Marvel Comics
* Logo of Finos Film, a former Greek film production company
* Found footage (pseudo-documentary), a film genre in which created footage is presented as if it were discovered
* Family Feud, an American syndicated game show
* Family Fortunes, a British game show based on the American version
* Freeform (TV channel), a US cable and satellite TV channel that is targeted to teens and young adults
* FF, the production code for the 1966–67 Doctor Who serial The Highlanders
* Fanfiction, unofficial writing about a work based on the work's characters and setting.
* Fire Force, a manga series about superhero firefighters with a serialized anime adaptation

## Businesses and organizations

* Faraday Future, a car company
* Fianna Fáil, political party in the Republic of Ireland and Northern Ireland
* Mukti Bahini (Freedom Fighters), armed organizations who fought against the Pakistan Army during the Bangladesh Liberation War
* Tower Air (IATA code: FF), a certificated FAR 121 schedule and charter U.S. airline that operated from 1983 until 2000

## Language

* ⟨ff⟩, a Latin alphabet digraph, see List of digraphs in Latin alphabets#F
* ⟨ﬀ⟩, a typographic ligature
* Word-initial ff, digraph used initially
* Fula language (ISO 639-1 code ff), a language of West Africa

## Science and technology
### Computing

* File format, any of numerous ways to encode information on digital media
** .ff file format, used by game developer Infinity Ward to store data securely
** .ff file format, used by imaging technologies corporation Agfa-Gevaert to store font outline data
* Firefox, a web browser developed by Mozilla Foundation
* Flip-flop (electronics), a digital electronic circuit memory element
* Form Feed, a control character in the C0 control code set used in ASCII
* Full-frame digital SLR, a camera fitted with an image sensor equivalent in size to traditional 35 mm film
* Adobe Font Folio, an Adobe software

### Transportation

* Ferrari FF, a sports car
* Jensen FF, the first non all-terrain production car equipped with 4WD and an anti-lock braking system
* Feet forwards motorcycle
* Front-engine, front-wheel-drive layout, a car designed with a front engine and front-wheel drive, colloquially known as "FF" for short
* Front freewheel, a crankset for bicycles

### Other uses in science and technology

* Fast forward, forward movement through a recording faster than the speed at which it was recorded
* Femtofarad (fF), a unit of capacitance equal to 1×10$^{−15}$ farads
* Fill factor (disambiguation), a term applied in various geometrical models and electronic devices
* Filtration fraction, in renal physiology
* Frasnian-Famennian extinction (F-F), also known as the Late Devonian extinction
* FFmpeg, a free and open source suite of video and audio encoding libraries.

## Other uses

* 255 (number) (hexadecimal: FF$_{16}$), the largest numeric value possible for an unsigned byte
* ff., and the following pages (in a citation)
* FF, a bra size
* False flag, a diversionary or propaganda tactic
* Flirty fishing (FFing), evangelistic prostitution method formerly used by the Children of God
* Follow Friday, a Twitter hashtag
* FontFont, a font library owned by FontShop International
* Founding Fathers of the United States
* French Franc, a currency
* Frequent flyer, often abbreviated as FF# on itineraries or travel documents
* FF, a US Navy hull designation for a frigate