A megacity is a very large city metropolitan area, typically with a population of more than 10 million people.
Megacity or Mega City may also refer to:
Megacity (video game), a 2011 mobile video game Mega City (car), by French automobile manufacturer Aixam-Mega Mega City Vehicle, a former name of the BMW i3 Mega City (shopping mall), a shopping mall in New Taipei, Taiwan Toronto, known as "Megacity" after the 1998 amalgamation of Toronto Mega City, a French quadricycle
See also Megalopolis, a group of two or more roughly adjacent metropolitan areas Mega-City One and Mega-City Two, fictional locations in the Judge Dredd series Mega City Four, an English indie rock band BMW Mega City Vehicle, now BMW i3 MegaCity Chorus, a Canadian men's music group