O
Unicode subscripts and superscripts
Enclosed Alphanumeric Supplement
Octonion
Fraktur
Ordinal indicator
Enclosed Alphanumerics
Ö
Ơ
Oʻ
Ɵ
Õ
Ó
Ǫ
Ò
Open O
Open-mid back rounded vowel
O'
Inverted breve
Mid back rounded vowel
ⱺ
Ꝍ
Ǫ́
Mid front rounded vowel
O͘
Ø
Breve
Circumflex
Macron (diacritic)
Bilabial click
Double acute accent
Vietnamese alphabet
Dot (diacritic)
International Phonetic Alphabet
Cedilla
Nasal vowel
Mid central vowel
Double grave accent
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-methylated flavonoid
O visa
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
O series
Tai O
O. Henry Award
Ping-O-Tronic
O Come, O Come, Emmanuel
Big O
O (Cyrillic)
Big O notation
O-ring
Haplogroup O-M119
O-Pivalylbufotenine
O Tannenbaum
Yeshe-Ö
Ó Paí, Ó
O Tempo e o Vento
P&O Cruises
O-type star
Ó Rothláin
Isoflavone-7-O-beta-glucoside 6"-O-malonyltransferase
O le Ao o le Malo
P&O Princess Cruises
O-demethylpuromycin O-methyltransferase
O-linked glycosylation
Flavonol-3-O-beta-glucoside O-malonyltransferase
Daddy-O
Pig-hoo-o-o-o-ey
Kamen Rider Den-O + Shin-O
O-Acetylserine
O-Bi, O-Ba: The End of Civilization
O-type main-sequence star
Protein O-GlcNAcase
Vitexin 2"-O-rhamnoside 7-O-methyltransferase
Ó Lochlainn
Asynchronous I/O
Ó Sé
Google I/O
Cyanidin 3-O-rutinoside 5-O-glucosyltransferase
Delphinidin 3',5'-O-glucosyltransferase
Lycoming O-235
Cyanidin-3-O-glucoside 2-O-glucuronosyltransferase
Tam o' Shanter
Anthocyanin 3-O-glucoside 6''-O-hydroxycinnamoyltransferase
Jell-O
Anti-streptolysin O
Memory-mapped I/O and port-mapped I/O
O scale
Haplogroup O-M175
Cyrillic O variants
O (German magazine)
O Silêncio Q Precede O Esporro
HNLMS O 20
The Big O
Haplogroup O-M268
THC-O-acetate
Handley Page Type O
P&O Ferries
W/o
Jack-o'-lantern
Subdwarf O star
USS O-12
Double-O
Shibuya O-East
O... Saya
Yam O
Te Pīhopatanga o Te Upoko o Te Ika
O tempora, o mores!
Continental O-200
Te o Tsunagō/Ai o Utaō
Séamus Ó Fearghail
O-Zone
Te Pīhopatanga o Te Manawa o Te Wheke
'O pere e 'o musso
Domnall Ó Cuindlis
Lycoming O-290
USS O-7
Heme O
I/O scheduling
Punk-O-Rama
Anthocyanin 5-O-glucoside 6'''-O-malonyltransferase
Páidí Ó Sé
Jell-O Gallery
Ō clan
Douglas O-2
O-Bahn Busway
Beta-glucogallin O-galloyltransferase
O-aew
O, The Oprah Magazine
Beta-glucogallin—tetrakisgalloylglucose O-galloyltransferase
Five-O
Luteolin-7-O-diglucuronide 4'-O-glucuronosyltransferase
Ó hUiginn
Man o' war
Ō-yoroi
Steve O.
Mícheál Ó Cléirigh
Ádhamh Ó Cianáin
The Marquise of O
O family
Tseung Kwan O line
Diarmaid Ó Donnchadha
Antoine Ó Raifteiri
Máirtín Ó Direáin
Channel I/O
8-hydroxyfuranocoumarin 8-O-methyltransferase
O 12-class submarine
5-O-Methylmyricetin
Soleil O
Lycoming O-360
Sunn O)))
Flavanone 7-O-glucoside 2"-O-beta-L-rhamnosyltransferase
Triple-O
Ō Rissei
Doyle O-2 Oriole
Lycoming O-320
Cho-Den-O series
Big O Tires
Five Pointe O
Lycoming O-435
Ó Flaithbheartaigh
N-acetylneuraminate 7-O(or 9-O)-acetyltransferase
O schöner Mai!
USS O-6
Laugh-O-Gram Studio
HNLMS O 24
O with tilde (Cyrillic)
Yi O
O Ta-ryŏn
USS O-5
Tomás Ó Fiaich
O with macron (Cyrillic)
Bit-O-Honey
Maelbrighte Ó Hussey
O. O. McIntyre
Cruise-O-Matic
T and O map