O
Ordinal indicator
Enclosed Alphanumeric Supplement
Octonion
Fraktur
Unicode subscripts and superscripts
Enclosed Alphanumerics
Ɵ
Ö
Ò
Õ
Ơ
Ǫ
Ó
Oʻ
Breve
Inverted breve
Open O
Mid back rounded vowel
O'
Ø
Open-mid back rounded vowel
Ꝍ
O͘
ⱺ
Mid front rounded vowel
Ǫ́
Bilabial click
Circumflex
Macron (diacritic)
Dot (diacritic)
Vietnamese alphabet
Double acute accent
Nasal vowel
Livonian language
Diethyl ether
Ogonek
Double grave accent
Hook above
R-colored vowel
International Phonetic Alphabet
Finno-Ugric transcription
Cedilla
Mid central vowel
Shift Out and Shift In characters
Scribal abbreviation
Ring (diacritic)
Nasal bilabial click
Small caps
Caron
O,O′-Diacetyldopamine
P&O
O,O′-Dipivaloyldopamine
O visa
O (disambiguation)
O-methylated flavonoid
O Antiphons
O-GlcNAc
O A e o Z
Douglas O-38
O-Acetylbufotenine
O class
O line
Pui O
O series
O lucenti, o sereni occhi
Big O notation
Big O
O-Pivalylbufotenine
Tai O
O Come, O Come, Emmanuel
Ping-O-Tronic
O. Henry Award
Haplogroup O-M119
O-ring
Yeshe-Ö
O Tannenbaum
O (Cyrillic)
Ó Paí, Ó
O Tempo e o Vento
P&O Cruises
O-type star
Isoflavone-7-O-beta-glucoside 6"-O-malonyltransferase
O le Ao o le Malo
O-demethylpuromycin O-methyltransferase
Flavonol-3-O-beta-glucoside O-malonyltransferase
O-linked glycosylation
Daddy-O
P&O Princess Cruises
Kamen Rider Den-O + Shin-O
Ó Rothláin
O-Bi, O-Ba: The End of Civilization
O-Acetylserine
Pig-hoo-o-o-o-ey
Ó Lochlainn
Asynchronous I/O
Google I/O
Cyanidin 3-O-rutinoside 5-O-glucosyltransferase
Lycoming O-235
Vitexin 2"-O-rhamnoside 7-O-methyltransferase
Ó Sé
Protein O-GlcNAcase
Cyanidin-3-O-glucoside 2-O-glucuronosyltransferase
Delphinidin 3',5'-O-glucosyltransferase
O-type main-sequence star
Jell-O
Anti-streptolysin O
Memory-mapped I/O and port-mapped I/O
O scale
Tam o' Shanter
Haplogroup O-M268
O (German magazine)
Haplogroup O-M175
Subdwarf O star
HNLMS O 20
Anthocyanin 3-O-glucoside 6''-O-hydroxycinnamoyltransferase
Cyrillic O variants
O Silêncio Q Precede O Esporro
THC-O-acetate
O... Saya
Handley Page Type O
Jack-o'-lantern
P&O Ferries
Lycoming O-290
Continental O-200
W/o
Double-O
USS O-12
Yam O
Séamus Ó Fearghail
O tempora, o mores!
Shibuya O-East
USS O-7
Te Pīhopatanga o Te Upoko o Te Ika
Te o Tsunagō/Ai o Utaō
O-Zone
Domnall Ó Cuindlis
I/O scheduling
The Big O
Anthocyanin 5-O-glucoside 6'''-O-malonyltransferase
Páidí Ó Sé
Heme O
'O pere e 'o musso
Beta-glucogallin—tetrakisgalloylglucose O-galloyltransferase
Te Pīhopatanga o Te Manawa o Te Wheke
Beta-glucogallin O-galloyltransferase
Jell-O Gallery
O, The Oprah Magazine
Ádhamh Ó Cianáin
Luteolin-7-O-diglucuronide 4'-O-glucuronosyltransferase
Man o' war
Five-O
Ó hUiginn
Ō clan
O-aew
Channel I/O
Steve O.
Diarmaid Ó Donnchadha
The Marquise of O
Mícheál Ó Cléirigh
Ō-yoroi
O-Bahn Busway
O family
Máirtín Ó Direáin
Antoine Ó Raifteiri
Punk-O-Rama
Douglas O-2
8-hydroxyfuranocoumarin 8-O-methyltransferase
Soleil O
Doyle O-2 Oriole
Tseung Kwan O line
Ō Rissei
O 12-class submarine
O schöner Mai!
5-O-Methylmyricetin
Flavanone 7-O-glucoside 2"-O-beta-L-rhamnosyltransferase
Triple-O
Five Pointe O
Cruise-O-Matic
N-acetylneuraminate 7-O(or 9-O)-acetyltransferase
O with tilde (Cyrillic)
Lycoming O-435
HNLMS O 24
Lycoming O-360
Big O Tires
O Ta-ryŏn
O salutaris hostia
USS O-6
T and O map
Cho-Den-O series
Luteolin-7-O-glucuronide 2"-O-glucuronosyltransferase
Maelbrighte Ó Hussey
Sunn O)))
Ó Tomhrair
Tomás Ó Fiaich
Yi O
Ó hAichir
USS O-5
5-hydroxyfuranocoumarin 5-O-methyltransferase
O Tú o Ninguna