OO
OO, O_O or variants may refer to: == Arts and entertainment == OO (EP), by Zion.T, 2017 OO, production code for the 1967 Doctor Who serial The Ice Warriors "O.O" (song), by Nmixx, 2022 == Places == Oô, France Oo, Indonesia == Science and transportation == ʻŌʻō, an extinct bird of the genus Moho SkyWest Airlines, IATA airline code OO OO, the aircraft registration prefix for Belgium Old Oak Common TMD, England, carriage shed depot code OO == Other uses == several emoticons Oriental Orthodoxy, a Christian denomination <oo>, a Latin-script digraph Ꝏ, a ligature of the Latin script.