{{wiktionarypar|oto|Oto}} '''Oto''', '''Ōtō''', or '''OTO''' may refer to:
{{TOC right}} ==People== *Oto (name), including a list of people with the name *The Otoe tribe (also spelled Oto), a Native American people
==Places== *Oto, Spain, a village in the Valle de Broto, in Huesca, Aragon
===Japan=== *Ōtō, Fukuoka *Ōtō, Nara, merged into Gojō in 2005 *Ōtō, Wakayama, merged into Tanabe in 2005
===United States=== *Oto, Iowa *Oto, Missouri *Oto Reservation, formerly located in southeastern Nebraska *OTO Homestead and Dude Ranch, Montana
==Other uses== *''Greta oto'', a butterfly of family Nymphalidae *Ordo Templi Orientis, organization centered on the Law of Thelema *''Oto'' (album), the third album by Fluke, released in 1995 *OTO Awards, a Slovak awards show *''Otocinclus'', a genus of armored catfish **Zebra oto *Oto-Manguean languages, a large family comprising several families of Native American languages **Oto-Pamean languages *Oto Melara, an Italian defense company, formerly known as ''Odero Terni Orlando'' *OTO (Slovenian TV channel), part of media company Pro Plus *Seibi Oto, a fictional character in the anime series ''Sky Girls'' *''Osu! Tatakae! Ouendan!'', a 2005 rhythm video game
==See also== *Aloadae, Greek mythological figures also known as Otos *Otoe (disambiguation) *Otology, a branch of medicine which studies the ear *Otos, Valencia, Spain
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