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