A lost city is an urban settlement that fell into terminal decline and whose significance was forgotten.
Lost City, The Lost City, or Lost Cities may also refer to:
Places
Ciudad Perdida, a lost city on the Caribbean coast of Colombia
Lost City, California, in Calaveras County
Lost City, Oklahoma, USA, the landing site of the Lost City Meteorite
Lost City, West Virginia, USA, named for the nearby Lost River
Pueblo Grande de Nevada also known as "Nevada's Lost City", a complex of villages, located near Overton, Nevada, USA
The Palace of the Lost City, a luxury holiday resort near the Sun City casino and resort in the North West Province of South Africa
Lost City (hydrothermal field), Atlantis Massif, Mid-Atlantic Ridge; a field of hydrothermal vents in the Atlantic Ocean
Arts, media and entertainment
Films
The Lost City (1920 serial), a film serial directed by E.A. Martin and starring Juanita Hansen
The Lost City (1935 serial), two science fiction films directed by Harry Revier and starring Kane Richmond
The Lost City (1950 film), a Mexican drama film
The Lost City (1955 film), an Italian-Spanish drama film
The Lost City (1997), a feature-length compilation of the South African TV series, The Legend of the Hidden City
The Lost City (2005 film), a film about the owner of a Havana nightclub in 1958 directed by Andy Garcia
The Lost City (2022 film), a romantic comedy adventure film
Games
Lost Cities (video game), an Xbox 360 game planned for release in 2008 and based on the card game
Lost Cities, a card game published by both Kosmos and Rio Grande Games
The Lost City (Dungeons & Dragons), a 1982 adventure module for the Dungeons & Dragons fantasy role-playing game
The Lost City (video game), a 2012 iOS point-and-click adventure game
Other media uses
"Lost City" (Stargate SG-1), a two-part episode of the television series Stargate SG-1
Lost City (novel), a 2004 novel by Clive Cussler
The Lost Cities: A Drift House Voyage, a children's novel by Dale Peck
"The Lost City", an episode from Ben & Holly's Little Kingdom
"The Lost City", an episode from Dora the Explorer