Underworld (1937 film), a drama directed by Oscar Micheaux

Underworld (DeLillo novel), a best-selling novel written by Don DeLillo

Criminal underworld, another name for organized crime

Underworld, an underwear factory in the British soap opera Coronation Street

The Underworld is a place in religion and mythology where the souls of the recently departed go. Underworld or netherworld may also refer to:

Underworld, an underground pit and base of operations used by the Villains in Power Rangers: Mystic Force

Underworld (band), an electronic music band

Underworld: Evolution, the 2006 sequel to the 2003 film

Underworld (2003 film), a horror/action film starring Kate Beckinsale

Underworld (DC Comics), a DC comics fictional location under Metropolis where creatures from War World took over

Underworld, a serial in the British science fiction television series Doctor Who

Underworld (series), the film series with two installments and a third in development

Underworld (Dreamlands), a location in H. P. Lovecraft's Dreamlands

Greek underworld, the Greek version

Underworld (Reginald Hill novel), a novel from the Dalziel and Pascoe series

Underworld (1927 film), a silent film directed by Josef von Sternberg

Underworld (comics), a Marvel Comics character

Ultima Underworld, computer games.

Netherworld (DC Comics) is a fictional section of Chicago in the DC Comics universe

Cities of the Underworld, a documentary television series

Underworld (1985 film), a horror film written by Clive Barker

Netherworld (computer game), a 1988 computer game

Kaz's Underworld, an adult comic strip by Kaz

Underworld (Talker), a popular ew-too-based talker site

Underworld (album), a 2003 album by Adagio

Underworld (1996 film), a comedy/thriller film starring Denis Leary and Joe Mantegna

Tomb Raider: Underworld, the eighth game in the Tomb Raider series, developed by Crystal Dynamics

Camden Underworld, a music venue and nightclub located under The World's End pub in Camden Town, London

In the writings of Jack London the term "The Underworld" often refers to the poor and working-class districts of American cities, specifically of San Francisco