Ærø is one of the Danish Baltic Sea islands, and part of the Southern Denmark Region. The name comes from the Danish words ær (maple) and ø (island).

AERO (Anthology of Electronic Revisited Originals) is a 2004 album of electronic music by Jean Michel Jarre. It is composed of previously released tracks re-recorded in 5.1 surround sound plus three new tracks (one of which, the title track "Aero", is actually a rework of "Je Me Souviens", from Jarre's 2000 album Métamorphoses, using the same main melody but with no vocals) and a bonus live track. All tracks are sewn together through surround-sound "Scenes".

Aero is a Greek prefix relating to flight, and air. In British English it is used as an adjective related to flight (as a shortened substitute for aeroplane), as in "aero engine".