Cydonia is the fifth studio album by English electronic music duo the Orb. It was released on 27 February 2001 in the United Kingdom by Island Records and in the United States by MCA Records. Members Alex Paterson and Thomas Fehlmann, along with usual collaborators Andy Hughes, Nick Burton, and Simon Phillips, wrote and produced the album for a planned 1999 release. Featured on the album are Robert Fripp, John Roome, and Fil Le Gonidec, who had previously only worked with the Orb in live performances.

The Orb are an English electronic music group founded in 1988 by Alex Paterson and Jimmy Cauty. Known for their psychedelic sound, the Orb developed a cult following among clubbers "coming down" from drug-induced highs. Their influential 1991 debut album The Orb's Adventures Beyond the Ultraworld pioneered the UK's nascent ambient house movement, while its UK chart-topping follow-up U.F.Orb represented the group's commercial peak.