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