# Firefly (disambiguation)

Firefly is a common name for a bioluminescent beetle in the family Lampyridae.
Firefly or fireflies may also refer to:

## Organizations and companies

* Firefly (airline), a subsidiary of Malaysia Airlines
* Firefly (car rental), an international car hire company owned by Hertz
* Firefly Aerospace, a private aerospace firm based in Austin, Texas; formerly "Firefly Space Systems"
* Firefly Arts Collective, a New England regional burning event
* Firefly Distillery, a distillery based in South Carolina that manufactures a line of vodka products
* Firefly (marque), an electric car brand owned by Nio Inc.
* Firefly Tonics, an English producer of fruit juice drinks with added herbal extracts
* Firefly Learning, an educational technology company from London
* Firefly Studios, a computer game developer from London

## Entertainment
### Fictional elements

* Firefly (DC Comics), a Batman villain
* Firefly (Archie Comics), a character in the Archie comic book universe
* Firefly (G.I. Joe), a villain in the G.I. Joe universe, member of Cobra
* Rufus T. Firefly, a character played by Groucho Marx in the 1933 film Duck Soup
* The Fireflies, a rebel militia in the game The Last of Us
* Firefly, a character featured in the Penacony chapter of the game Honkai: Star Rail

### Film and television

* Firefly (TV series), a 2002 science fiction TV program created by Joss Whedon
** Firefly (franchise), a science fiction franchise stemming from the TV program created by Joss Whedon
* Firefly (2000 film), a Japanese film directed by Naomi Kawase
* Firefly (2005 film), an independent film directed by Pete Marcy
* Firefly (2023 film), a Philippine film directed by Zig Dulay
* The Firefly (1937 film), the 1937 film adaptation of the Rudolf Friml operetta starring Allan Jones
* "The Firefly" (Fringe), a 2011 episode of the television series Fringe
* The Firefly (2015 film), a Colombian film directed by Ana Maria Hermida
* Fireflies (2014 film), a Bollywood film by Sabal Singh Shekhawat
* Fireflies (TV series), a 2004 Australian TV series
* Fireflies (2018 film), an Indian Meitei-language documentary film
* Fireflies: Parth Aur Jugnu, an Indian web series

### Literature

* Firefly, a 1990 science-fiction novel by Piers Anthony
* Firefly (novel), a 2021 novel by Philippa Dowding
* Fireflies, a 1988 memoir by David Morrell
* Fireflies (novel), a 1970 novel by Shiva Naipaul
* The Firefly, a 2003 novel by P. T. Deutermann

### Music

* Firefly Music Festival, an annual American music festival held in Dover, Delaware
* The Firefly (operetta), a 1912 operetta by Rudolf Friml

#### Bands

* Fire Flies, an American rock band based in New York City
* The Fireflies, an American doo wop group
* Firefly (band), the Filipino Indie rock bands

#### Albums

* Firefly (Emily Remler album), 1981
* Firefly (Jeremy Steig album), 1977
* Firefly (TNT album), 1997
* Firefly (Uriah Heep album), 1977
* Firefly (Sara Storer album), 2005
* Firefly, a 2001 album by Garnet Rogers
* Fireflies (Faith Hill album), 2005
* Fireflies (Frodus album), 1995
* Fireflies, 1998, by Rubygrass, fronted by Oskar Saville

#### Songs

* "Firefly" (Christina Metaxa song), the Cypriot entry to the Eurovision Song Contest 2009, sung by Christina Metaxa
* "Firefly" (Cy Coleman song), recorded by Tony Bennett in 1958
** "Firefly", a song recorded by Tony Bennett and Lady Gaga on their 2014 album Cheek to Cheek
* "Firefly" (InMe song), 2002
* "Fireflies" (Leona Lewis song), 2012
* "Fireflies" (Owl City song), 2009
* "Fireflies" (Zendaya song), 2013
* "Fire Fly", a song by Mike Oldfield on his 2002 Tres Lunas album
* "Fire Fly", a song by Childish Gambino on his 2011 Camp album
* "Firefly", a song by American Music Club on their 1988 California album
* "Firefly", a song by Blackfield on their 2013 album, Blackfield IV
* "Firefly", a song by A*Teens on their 2001 Teen Spirit album
* "Firefly", a song by Saves the Day on their 2001 Stay What You Are album
* "Firefly", a song by BeForU on their 2003 self-titled album
* "Firefly", a song by Breaking Benjamin on their 2004 We Are Not Alone album
* "Fireflies", a song by Fleetwood Mac on their 1980 album Live
* "Fire Flies", a song by Gorillaz on their 2018 album The Now Now
* "Fireflies", a song by Patti Smith from her 1996 album Gone Again
* "Fireflies", a song by JJ Grey & MOFRO on their 2004 album Lochloosa
* "Fireflies", a song by Finch on their 2005 Say Hello to Sunshine album
* "Fireflies", a song by Rhett Miller on his 2006 The Believer album
* "Fireflies", a song by Chris Garneau from his 2009 El Radio album
* "Fireflies", a song by Richard Rawson featuring Tom Parker
* "Euphoria (Firefly)", a song by Delerium
* "Fireflies", a song by Sam and the Womp
* "Firefly", a song by Jim Yosef for NoCopyrightSounds

### Other uses in entertainment

* The Firefly (operetta), by Rudolf Friml
* Firefly Role-Playing Game, a role-playing game by Margaret Weis Productions

## Vehicles and transportation technology
### Air
#### Airplanes

* Fairey Firefly, a 1940s British, naval, reconnaissance and fighter aircraft
* Fairey Firefly I, a 1920s British biplane fighter project (cancelled)
* Fairey Firefly IIM, a 1930s British biplane fighter
* Kolb Firefly, an American ultralight aircraft
* MBB Lampyridae 'Firefly', a German stealth fighter project during the 1980s
* Slingsby T67 Firefly, a British light training aircraft

#### Drones

* Globe KD2G Firefly, an American target drone
* Ryan AQM-91 Firefly, an American long-range reconnaissance drone

#### Helicopters

* Sikorsky Firefly, an all-electric helicopter built for research purposes

### Land
#### Automobile

* Pontiac Firefly, a subcompact automobile based on the Suzuki Cultus
* Fiat Global Small Engine, marketed as "Firefly"

#### Rail

* Firefly (train), a U.S. passenger train operated by the St. Louis - San Francisco Railway
* GWR Firefly Class, a class of steam locomotive on the Great Western Railway
* Firefly, a steam locomotive operated by the Orange and Alexandria Railroad

#### Military

* Sherman Firefly, a British variant of the M4 Sherman military tank

### Nautical

* Firefly (1843), a ship used by the colony of Victoria for a rescue party for the Burke and Wills expedition in northern Australia, 1861
* Firefly (dinghy), a type of sailing dinghy
* Firefly (Taiping Rebellion steamer), an armed Chinese steamer used in the 1860s
* HMS Firefly, several ships of the Royal Navy
* HMT Firefly, a British trawler that operated between 1930 and 1961
* USS Firefly (1814), a brig formerly named Volant

### Space

* FireFly (spacecraft), an asteroid-searching spacecraft proposed by Deep Space Industries
* Firefly Alpha, a small orbital-class rocket in development

## Technology
### Hardware

* Firefly PC Remote, a remote control by SnapStream Media used to control Windows-based computers
* Firefly (mobile phone), a simplified cellphone designed for young children

### Computers

* Firefly (supercomputer), a supercomputer
* DEC Firefly, a multiprocessor workstation

### Software

* Firefly (cache coherence protocol), a method of caching used in the DEC Firefly
* Firefly (computer program), an ab initio computational chemistry software
* Firefly (key exchange protocol), a security protocol used in telephony
* Fireflies (computer graphics), a rendering artifact
* Firefly algorithm, an algorithm for mathematical optimization
* Firefly Media Server, an audio media server for the Roku SoundBridge and iTunes
* Adobe Firefly, a Generative artificial intelligence

## Other uses

* Firefly Estate, Jamaica
* Firefly (website), an online community developed in the late 1990s