FF

FF, Ff, fF or ff may refer to:

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 Game 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), an 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
 * $⟨ﬀ⟩$, a typographic ligature
 * Word-initial ff, digraph used initially
 * Fula language (ISO 639-1 code ff), a language of West Africa

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 35mm 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: FF16), 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
 * 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