AEO may refer to: Authorized economic operator, a WCO standard to secure and facilitate global trade American Eagle Outfitters, an American clothing and accessories retailer Appearance event ordination, a dating system for land mammal fossils Alternative episcopal oversight, ecclesiastical systems through which certain churches are provided with a different bishop Adaptive Execution Office of DARPA (US military) Aioun el Atrouss Airport (IATA airport code: AEO) in Mauritania See also AO (disambiguation) EO (disambiguation) Aeos (disambiguation) AOE (disambiguation)