Plurality of worlds may refer to:
Cosmic pluralism, belief in numerous "worlds" which may harbour extraterrestrial life Conversations on the Plurality of Worlds, a 1686 book by Bernard Le Bovier de Fontenelle Of the Plurality of Worlds, an 1853 essay by William Whewell On the Plurality of Worlds, a 1986 book by David Lewis Plurality of Worlds (album), an album by PeroxWhy?Gen