UEO

UEO may refer to:


 * Katsuhiro Ueo (born 1972), Japanese professional drifting driver
 * Kumejima Airport (IATA: UEO), Okinawa, Japan
 * United Earth Oceans Organization, an organization in the television series SeaQuest DSV
 * the abbreviation for Union de l'Europe Occidentale on the flag of the Western European Union