Fiend

Fiend may refer to:
 * An evil spirit or demon in religion or mythology
 * A person addicted to either a pernicious act, a cause, a hobby or sport

Music

 * Fiends (album), by Christian post-hardcore band Chasing Victory
 * Fiend (rapper) (born 1976), rapper formerly with No Limit Records
 * "Fiend" (song), a 2002 song by Coal Chamber
 * "Fiend", a song by Orgy from Candyass
 * "Fiend", a song by Pestilence from the album Resurrection Macabre
 * "F(r)iend", a song by In Flames from the album Soundtrack to Your Escape
 * Fiend, a musical project by Brendan O'Hare
 * Fe!n, a 2023 song by Travis Scott

Film

 * The Fiend (film), a 1972 British serial killer horror film
 * Fiend (film), a 1980 American B movie science fiction horror film

Other

 * The Fiend, alter-ego of professional wrestler Bray Wyatt
 * The Fiend, a Russian fairy tale
 * Fiend (Dungeons & Dragons), a collective term for malicious creatures in the Dungeons & Dragons role-playing game