Editing OO

{{Technical reasons|O_O|prefix=y}}
{{Wiktionary|oo|O O|o O|o o|öö|Appendix:Variations of "oo"}}

'''OO''', '''O_O''' or variants may refer to:

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== Arts and entertainment ==
* [[OO (EP)|''OO'' (EP)]], by Zion.T, 2017
* OO, production code for the 1967 ''Doctor Who'' serial ''[[The Ice Warriors]]''
* [[O.O (song)|"O.O" (song)]], by Nmixx, 2022

== Places ==
* [[Oô]], France
* [[Oo, Indonesia]]

== Science and transportation ==
* [[{{okina}}Ō{{okina}}ō]], an extinct bird of the genus ''Moho''
* [[SkyWest Airlines]], IATA airline code OO
* OO, [[list of aircraft registration prefixes|the aircraft registration prefix]] for Belgium
* [[Old Oak Common TMD]], England, carriage shed depot code OO

== Other uses ==
* several [[emoticon]]s
* <oo>, [[List of Latin-script digraphs|a Latin-script digraph]]
* [[{{not a typo|Ꝏ}}]], a ligature of the Latin script.
* {{okina}}O{{okina}}o 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&ndash;2024), Burmese politician, activist and military

== See also ==
* [[Double O (disambiguation)]]
* [[00 (disambiguation)]]
* [[0-0 (disambiguation)]]
* [[O0 (disambiguation)]]
* [[OOO (disambiguation)]]
* <math>\infty</math>, [[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

{{Disambiguation}}