Aoa, AOA,or AoA may refer to:
AOA (Hangul: 에이오에이; an acronym for Ace of Angels) is a South Korean idol girl group signed under FNC Entertainment.
South Korean girl group AOA has released three studio albums, one compilation album, four EPs, eighteen singles (including ten physical singles and eight digital singles), and two promotional singles.
AOA Cream is a subgroup of the South Korean girl group AOA, formed by FNC Entertainment in 2016. It is composed of three AOA members: Yuna, Hyejeong and Chanmi.
AOA Black is a subgroup of the South Korean girl group AOA, formed by FNC Entertainment in 2013. It is composed of five AOA members: Jimin, Choa, Yuna, Mina and Youkyung.
Acyloxyacyl hydrolase, also known as AOAH, is a protein which in humans is encoded by the AOAH gene.
AOAC INTERNATIONAL is a non-profit scientific association with headquarters in Gaithersburg, Maryland, USA.
Aoa are fictional creatures in the Dungeons & Dragons role-playing game.
Aoandon, or Aoandō (青行灯 or 青行燈, "blue andon") is a creature illustrated by Toriyama Sekien in his Konjaku Hyakki Shūi.