Oto may refer to:

• The Otoe tribe (also spelled Oto), a Native American tribe.
• Oto, Iowa, a city in Iowa.
• Oto, a West African dish of mashed yams and hard-boiled eggs.
• Oto, the third album by Fluke, released in 1995 .
• Otocinclus, a genus of armored catfishes commonly kept in an aquarium.
• Oto Melara, an Italian defense company, formerly known as Odero Terni Orlando.
• Nataniela Oto, Japanese rugby player
• Oto, sounds in the Japanese language.
• oto, a pseudonym for the computer musician Kiku Hibino

OTO may also stand for:

• O.T.O., the abbreviation of Ordo Templi Orientis, a Thelemic fraternal organization
• Osu! Tatakae! Ouendan, a popular Japanese rhythm game for the Nintendo DS.

See also Otoe.

Source: adapted by the editor from Wikipedia, the free encyclopedia under a copyleft GNU Free Documentation License (GFDL) from the article "Oto"