Oko is a Russian missile defense system. Oko may also refer to:
Geography Oko, Warmian-Masurian Voivodeship, a settlement in Poland Oko-Akarè, an arrondissement in Benin Oko River, a river in Guyana Okoh Town, a town in Nigeria
Languages Oko language, a Niger–Congo language Oko-Juwoi language, an extinct, unrelated Great Andamanese language Old Korean (ISO 639-3 code)
People Adolph S. Oko Jr. (1904-1963), aship captain who supported the establishment of Israel Ataa Oko (1919–2012), Ghanaian artist Dorothy Kuhn Oko (1896–1971), librarian and labor unionist Oko Jumbo (died 1891), Nigerian traditional ruler Seiji Oko (born 1948), Japanese volleyball player
Science and technology OKO (company) (Opytno KonstrooktOrskoye), a Kiev-based manufacturer of aircraft, such as the Tairov OKO-1, Tairov OKO-4, and Tairov OKO-7 Öko-Institut, a German research institute US-K, also known as Oko, a satellite in the Oko system
Other uses Oko (orisha), a divine spirit in the Yoruba religion Oko (band), a Yugoslav rock band OKO, a building complex in the Moscow International Business Center OKO Tower, a skyscraper in the complex OK Orchestra, a 2021 studio album by AJR Oko, a character in the children's television show It's a Big Big World ÖkoDAX, a German stock market index Orisha Oko, a spirit in the Yoruba religion Yokota Air Base, a military air force airport in Tokyo, Japan
See also List of Oko satellites Okko (disambiguation)