Oto

Oto, Ōtō, or OTO may refer to:

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