O
Unicode subscripts and superscripts
Enclosed Alphanumeric Supplement
Octonion
Fraktur
Ordinal indicator
Enclosed Alphanumerics
Ö
Ɵ
Ơ
Oʻ
Õ
Ó
Ò
Ǫ
Open O
O'
Open-mid back rounded vowel
Inverted breve
ⱺ
Mid back rounded vowel
Breve
Ꝍ
O͘
Ǫ́
Ø
Mid front rounded vowel
Circumflex
Macron (diacritic)
Bilabial click
Double acute accent
Vietnamese alphabet
Dot (diacritic)
Nasal vowel
International Phonetic Alphabet
Double grave accent
Cedilla
Mid central vowel
R-colored vowel
Hook above
Diethyl ether
Livonian language
Ogonek
Shift Out and Shift In characters
Scribal abbreviation
Finno-Ugric transcription
Ring (diacritic)
Small caps
Nasal bilabial click
Caron
O,O′-Diacetyldopamine
P&O
O,O′-Dipivaloyldopamine
O visa
O-methylated flavonoid
O (disambiguation)
O Antiphons
O-GlcNAc
O A e o Z
Douglas O-38
O-Acetylbufotenine
Pui O
O class
O line
O lucenti, o sereni occhi
Tai O
O series
O Come, O Come, Emmanuel
Ping-O-Tronic
O. Henry Award
Big O
Big O notation
O (Cyrillic)
O-Pivalylbufotenine
O-ring
Haplogroup O-M119
Yeshe-Ö
O Tannenbaum
Ó Paí, Ó
O Tempo e o Vento
Isoflavone-7-O-beta-glucoside 6"-O-malonyltransferase
P&O Cruises
O-type star
Ó Rothláin
O le Ao o le Malo
O-demethylpuromycin O-methyltransferase
P&O Princess Cruises
O-linked glycosylation
Flavonol-3-O-beta-glucoside O-malonyltransferase
Daddy-O
Pig-hoo-o-o-o-ey
O-Acetylserine
Kamen Rider Den-O + Shin-O
O-Bi, O-Ba: The End of Civilization
O-type main-sequence star
Protein O-GlcNAcase
Ó Lochlainn
Asynchronous I/O
Vitexin 2"-O-rhamnoside 7-O-methyltransferase
Google I/O
Cyanidin 3-O-rutinoside 5-O-glucosyltransferase
Ó Sé
Lycoming O-235
Delphinidin 3',5'-O-glucosyltransferase
Tam o' Shanter
Memory-mapped I/O and port-mapped I/O
Cyanidin-3-O-glucoside 2-O-glucuronosyltransferase
Anthocyanin 3-O-glucoside 6''-O-hydroxycinnamoyltransferase
Anti-streptolysin O
Jell-O
O scale
Haplogroup O-M175
Cyrillic O variants
HNLMS O 20
O (German magazine)
O Silêncio Q Precede O Esporro
THC-O-acetate
Haplogroup O-M268
The Big O
Subdwarf O star
W/o
Handley Page Type O
P&O Ferries
Double-O
Shibuya O-East
Jack-o'-lantern
O... Saya
Te Pīhopatanga o Te Upoko o Te Ika
O tempora, o mores!
USS O-12
Yam O
Te o Tsunagō/Ai o Utaō
Continental O-200
Séamus Ó Fearghail
Lycoming O-290
Te Pīhopatanga o Te Manawa o Te Wheke
'O pere e 'o musso
O-Zone
Domnall Ó Cuindlis
USS O-7
Jell-O Gallery
I/O scheduling
Punk-O-Rama
Heme O
Anthocyanin 5-O-glucoside 6'''-O-malonyltransferase
Páidí Ó Sé
Ō clan
Douglas O-2
O-Bahn Busway
O-aew
Beta-glucogallin O-galloyltransferase
Five-O
Beta-glucogallin—tetrakisgalloylglucose O-galloyltransferase
O, The Oprah Magazine
Luteolin-7-O-diglucuronide 4'-O-glucuronosyltransferase
Ō-yoroi
Ó hUiginn
Steve O.
Man o' war
Ádhamh Ó Cianáin
O family
Mícheál Ó Cléirigh
The Marquise of O
Diarmaid Ó Donnchadha
Antoine Ó Raifteiri
Tseung Kwan O line
8-hydroxyfuranocoumarin 8-O-methyltransferase
Máirtín Ó Direáin
O 12-class submarine
Channel I/O
5-O-Methylmyricetin
Lycoming O-360
Soleil O
Sunn O)))
Triple-O
Lycoming O-320
Doyle O-2 Oriole
Ō Rissei
Flavanone 7-O-glucoside 2"-O-beta-L-rhamnosyltransferase
Big O Tires
Cho-Den-O series
Five Pointe O
Ó Flaithbheartaigh
Laugh-O-Gram Studio
O schöner Mai!
Lycoming O-435
N-acetylneuraminate 7-O(or 9-O)-acetyltransferase
USS O-6
HNLMS O 24
O with tilde (Cyrillic)
Yi O
USS O-5
Tomás Ó Fiaich
O Ta-ryŏn
O with macron (Cyrillic)
Cruise-O-Matic
O. O. McIntyre
Bit-O-Honey
Maelbrighte Ó Hussey
O-Desmethylangolensin