Fun generally refers to recreation or entertainment.
Fun may also refer to:

Arts, entertainment, and media
Music
Fun (band), an American indie pop band

Albums
Fun (Daniel Johnston album), 1994
Fun (Garth Brooks album), 2020
Fun?, a 1993 album by the Candyskins

Songs
"Fun" (Da Mob song), 1998
"Fun" (Coldplay song), 2015
"Fun" (Pitbull song), 2015
"Fun" (Xu Weizhou song), 2016
"Fun" (Blondie song), 2017
"Fun" (Selena Gomez song), 2020
"Fun", a 2003 song by Smash Mouth from the album Get the Picture?
"Fun!", a 2019 song by Fromis 9
"F.U.N. Fun Fanaa", a 2011 song by Ali Zafar
"Ffun", a 1977 song by Con Funk Shun

Other uses in arts, entertainment, and media
"F.U.N." (SpongeBob SquarePants), an episode
Fun Channel, a Middle Eastern TV channel
Fun (film), 1994
Fun (magazine), 1861-1901
Fun Radio (disambiguation)
Little Miss Fun, in the Little Miss books

Brands and enterprises
Cedar Fair, stock symbol FUN, an American amusement park operator that owns:
Oceans of Fun, in Kansas City, Missouri
Worlds of Fun and its onsite resort, Worlds of Fun Village, in Kansas City, Missouri
Fun Cinemas, a cinema chain in India
Fun Publications, an American comic book publisher
FUN Technologies, an online game company

Transportation
Air Creation Fun, a series of ultralight aircraft
Airborne Fun, a series of hang gliders
Fun 23, a French sailboat design
Funafuti International Airport, in Tuvalu

Other uses
Field with one element (Fun)
Fulniô language
Function (computer science)
France Université Numérique, an MOOC provider
Proposed denomination of Japanese Meiji period coinage

See also
Faun (disambiguation)
Fawn (disambiguation)
Fon (disambiguation)