FB, Fb, or fb may refer to:

Arts and media

F♭ (musical note) E is the third note and the fifth semitone of the C major scale, and mi in fixed-do solfège. It has enharmonic equivalents of F♭ F-flat) which is by definition a diatonic semitone above Eand D (D-double sharp), amongst others. When calcul ...

* FB (band), an electronic music collaboration of Benny Benassi and Ferry Corsten *

Facebook Facebook is an online social media and social networking service owned by American company Meta Platforms. Founded in 2004 by Mark Zuckerberg with fellow Harvard College students and roommates Eduardo Saverin, Andrew McCollum, Dustin Mosk ...

, a social networking website, also known as FB.com ** Meta Platforms, formerly Facebook Inc (Nasdaq: FB), parent company of Facebook * Friendship book, a booklet swapped amongst pen pals *

Frostbite (game engine) Frostbite is a game engine developed by DICE, designed for cross-platform use on Microsoft Windows, seventh generation game consoles PlayStation 3 and Xbox 360, eighth generation game consoles PlayStation 4, Xbox One and Nintendo Switch an ...

, a video game engine * FB, known as Trucksy in the US, a character in the British children's animated television programme '' Roary the Racing Car''

Science and technology

Computing

Framebuffer A framebuffer (frame buffer, or sometimes framestore) is a portion of random-access memory (RAM) containing a bitmap that drives a video display. It is a memory buffer containing data representing all the pixels in a complete video frame. Mode ...

, in computer technology *

FreeBASIC FreeBASIC is a free and open source multiplatform compiler and programming language based on BASIC licensed under the GNU GPL for Microsoft Windows, protected-mode MS-DOS (DOS extender), Linux, FreeBSD and Xbox. The Xbox version is no longer m ...

, a 32-bit compiler using BASIC syntax for DOS, Windows, and Linux *

FictionBook FictionBook is an open XML-based e-book format which originated and gained popularity in Russia. FictionBook files have the filename extension. Some readers also support ZIP-compressed FictionBook files ( or ) The FictionBook format does not ...

, an open XML-based e-book format hailing from Russia

Other uses in science and technology

F B The F B was an Imperial Japanese Army (IJA) military transport/personnel carrier used for crossing difficult swampy terrain. It was part of a series of vehicles developed by the army in its effort to mechanize and give mobility to their forces. ...

, a Japanese military vehicle used for crossing difficult swampy terrain * Fast busy, or

reorder tone The reorder tone, also known as the fast busy tone, or the congestion tone, or all trunks busy (ATB) tone is an audible call progress tone in the public switched telephone network (PSTN) that is returned to a calling party to indicate that the cal ...

, a type of telephone signal * Feedback, in signaling systems *

Femtobarn A barn (symbol: b) is a metric unit of area equal to (100 fm2). Originally used in nuclear physics for expressing the cross sectional area of nuclei and nuclear reactions, today it is also used in all fields of high-energy physics to expr ...

, a small unit of area used in high energy physics *

Fluidized bed A fluidized bed is a physical phenomenon that occurs when a solid particulate substance (usually present in a holding vessel) is under the right conditions so that it behaves like a fluid. The usual way to achieve a fluidize bed is to pump pressur ...

, a special technology used in energy, reactor, chemical engineering etc. *

Hyundai FB The Hyundai FB (hangul: 현대 에프비, 현대FB) is a line of front engine bus built by Hyundai Motor Company. They are commonly referred to as "FB", as in Front engine Bus. In Japan, Asia-Pacific, Mid-East, Africa, South America, its princi ...

, a series of buses manufactured by Hyundai Motor Company * Foreign body, any object originating outside the body

Sport

* Fenerbahçe, a Turkish sports club * Fly ball, a type of batted ball or a pitching stat in baseball * Football *

Fullback (American football) A fullback (FB) is a position in the offensive backfield in gridiron football, and is one of the two running back positions along with the halfback. Fullbacks are typically larger than halfbacks and in most offensive schemes the fullback's dut ...

, a position in American football *

Full-back (association football) In the sport of association football, a defender is an outfield position whose primary role is to stop attacks during the game and prevent the opposition from scoring. Centre-backs are usually positioned in pairs, with one full-back on either s ...

, a position in association football

Other uses

* Bulgaria Air (Bulgarian: България еър, IATA code FB), the flag carrier airline of Bulgaria * Firebase or

Fire support base A fire support base (FSB, firebase or FB) is a temporary military encampment to provide artillery fire support to infantry operating in areas beyond the normal range of fire support from their own base camps. FSBs follow a number of plans, their ...

, an artillery encampment *

Footbridge A footbridge (also a pedestrian bridge, pedestrian overpass, or pedestrian overcrossing) is a bridge designed solely for pedestrians.''Oxford English Dictionary'' While the primary meaning for a bridge is a structure which links "two points at a ...