O, Unicode subscripts and superscripts, Octonion, Fraktur, Enclosed Alphanumeric Supplement, Ordinal indicator, Enclosed Alphanumerics, Ö, Õ, Ɵ, Ó, Ǫ, Open-mid back rounded vowel, Oʻ, Ơ, Mid back rounded vowel, Ò, Ø, Ꝍ, Open O, ⱺ, O', Mid front rounded vowel, Breve, Inverted breve, O͘, Macron (diacritic), Vietnamese alphabet, Ǫ́, Dot (diacritic), Ogonek, Circumflex, Bilabial click, R-colored vowel, Finno-Ugric transcription, Hook above, Double acute accent, Nasal vowel, Shift Out and Shift In characters, Double grave accent, Cedilla

Scribal abbreviation, Ring (diacritic), International Phonetic Alphabet, Livonian language, Mid central vowel, Diethyl ether, Nasal bilabial click, Caron, Small caps, O,O′-Diacetyldopamine, P&O, O visa, O,O′-Dipivaloyldopamine, O (disambiguation), O-methylated flavonoid, O Antiphons, O A e o Z, O-GlcNAc, Douglas O-38, O-Acetylbufotenine, O line, O-Pivalylbufotenine, O class, O lucenti, o sereni occhi, Pui O, Big O notation, O series, Tai O, Big O, O Come, O Come, Emmanuel, Ping-O-Tronic, O. Henry Award, O (Cyrillic), O-ring, Haplogroup O-M119, O Tannenbaum, Ó Paí, Ó, O Tempo e o Vento, O-type star, P&O Cruises, Isoflavone-7-O-beta-glucoside 6"-O-malonyltransferase, O le Ao o le Malo, O-linked glycosylation, O-demethylpuromycin O-methyltransferase, P&O Princess Cruises, Flavonol-3-O-beta-glucoside O-malonyltransferase, Kamen Rider Den-O + Shin-O, Pig-hoo-o-o-o-ey, Ó Rothláin, Daddy-O

O, Unicode subscripts and superscripts, Octonion, Fraktur, Enclosed Alphanumeric Supplement, Ordinal indicator, Enclosed Alphanumerics, Ö, Õ, Ɵ, Ó, Ǫ, Open-mid back rounded vowel, Oʻ, Ơ, Mid back rounded vowel, Ò, Ø, Ꝍ, Open O, ⱺ, O', Mid front rounded vowel, Breve, Inverted breve, O͘, Macron (diacritic), Vietnamese alphabet, Ǫ́, Dot (diacritic), Ogonek, Circumflex, Bilabial click, R-colored vowel, Finno-Ugric transcription, Hook above, Double acute accent, Nasal vowel, Shift Out and Shift In characters, Double grave accent, Cedilla, Scribal abbreviation, Ring (diacritic), International Phonetic Alphabet, Livonian language, Mid central vowel, Diethyl ether, Nasal bilabial click, Caron, Small caps, O,O′-Diacetyldopamine, P&O, O visa, O,O′-Dipivaloyldopamine, O (disambiguation), O-methylated flavonoid, O Antiphons, O A e o Z, O-GlcNAc, Douglas O-38, O-Acetylbufotenine, O line, O-Pivalylbufotenine, O class, O lucenti, o sereni occhi, Pui O, Big O notation, O series, Tai O, Big O, O Come, O Come, Emmanuel, Ping-O-Tronic, O. Henry Award, O (Cyrillic), O-ring, Haplogroup O-M119, O Tannenbaum, Ó Paí, Ó, O Tempo e o Vento, O-type star, P&O Cruises, Isoflavone-7-O-beta-glucoside 6"-O-malonyltransferase, O le Ao o le Malo, O-linked glycosylation, O-demethylpuromycin O-methyltransferase, P&O Princess Cruises, Flavonol-3-O-beta-glucoside O-malonyltransferase, Kamen Rider Den-O + Shin-O, Pig-hoo-o-o-o-ey, Ó Rothláin, Daddy-O, O-Acetylserine, O-Bi, O-Ba: The End of Civilization, Google I/O, Ó Lochlainn, Ó Sé, Protein O-GlcNAcase, Vitexin 2"-O-rhamnoside 7-O-methyltransferase, Lycoming O-235, Asynchronous I/O, Cyanidin 3-O-rutinoside 5-O-glucosyltransferase, Delphinidin 3',5'-O-glucosyltransferase, O-type main-sequence star, Tam o' Shanter, Cyanidin-3-O-glucoside 2-O-glucuronosyltransferase, Anthocyanin 3-O-glucoside 6''-O-hydroxycinnamoyltransferase, Anti-streptolysin O, O scale, O (German magazine), Memory-mapped I/O and port-mapped I/O, HNLMS O 20, Yeshe-Ö, Haplogroup O-M175, Cyrillic O variants, W/o, Jack-o'-lantern, O tempora, o mores!, Shibuya O-East, O... Saya, The Big O, Subdwarf O star, Double-O, Handley Page Type O, Te o Tsunagō/Ai o Utaō, Te Pīhopatanga o Te Upoko o Te Ika, P&O Ferries, USS O-12, Lycoming O-290, THC-O-acetate, Séamus Ó Fearghail, Domnall Ó Cuindlis, Bit-O-Honey, Yam O, USS O-7, Continental O-200, O Silêncio Q Precede O Esporro, 'O pere e 'o musso, Heme O, I/O scheduling, Te Pīhopatanga o Te Manawa o Te Wheke, Beta-glucogallin O-galloyltransferase, Douglas O-2, Jell-O Gallery, O-Zone, O-aew, O‑Level, Anthocyanin 5-O-glucoside 6'''-O-malonyltransferase, O, The Oprah Magazine, Ádhamh Ó Cianáin, Punk-O-Rama, Beta-glucogallin—tetrakisgalloylglucose O-galloyltransferase