OO

Look up oo, O O, o O, o o, öö, or Appendix:Variations of "oo" in Wiktionary, the free dictionary.

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
• <oo>, a Latin-script digraph
• Ꝏ, a ligature of the Latin script.
• ʻOʻo stick, a traditional Hawaiian digging bar
• Original Oratory, a competitive event in high school forensic competitions
• OO gauge, a model railway standard
• Official Observer, an appointed amateur radio operator
• Oo Zun (1868–1944), Burmese social worker and Buddhist nun
• Tin Oo (1927–2024), Burmese politician, activist and military

See also

• Double O (disambiguation)
• 00 (disambiguation)
• 0-0 (disambiguation)
• O0 (disambiguation)
• OOO (disambiguation)
• ${\displaystyle \infty }$, infinity symbol
• ᅇ, an obsolete unit of the Hangul alphabet
• ⚭, marriage symbol
• ⱺ, a phonetic character
• Object-oriented programming, a computer programming paradigm
• Orange Order, a protestant fraternal order in Northern Ireland

This disambiguation page lists articles associated with the title OO.
If an internal link led you here, you may wish to change the link to point directly to the intended article.