AEIOU may refer to:

Language a, e, i, o, u, a traditional list of vowel letters in the Roman alphabet A.E.I.O.U., a device used by the Habsburgs

Media

Music

A.E.I.O.U. (album), 2005, by Sistars "AEIOU", a song on the debut album Waves and the Both of Us by Charlotte Sometimes "AEIOU (And Sometimes Y)", a song by Ebn Ozn "A.E.I.O.U.", a song by Zion I from Deep Water Slang V2.0 "A.E.I.O.U", a 1983 song by The Europeans "AEIOU" (Moana and the Moahunters song) "AEIOU" (Pnau and Empire of the Sun song)

Other aeiou Encyclopedia, a free online collection of reference works in German and English about Austria-related topics Aeiou, a cartoon character featured in the older version of Muse magazine AEIOU, a graphic novel by cartoonist Jeffrey Brown AEIOU (film), a 1979 Czechoslovak film

See also IOU (disambiguation)