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