Look up megacity in Wiktionary, the free dictionary.
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