Aquarion may refer to:
Companies Aquarion AG, a Switzerland-based water treatment company with subsidiaries in the EU-MENA region Aquarion Water Company, a public water supply company in Connecticut
Arts Genesis of Aquarion, a 2005 anime TV series Genesis of Aquarion (OVA), a 2007 original video animation series "Genesis of Aquarion" (song), a 2005 J-pop theme