O
Enclosed Alphanumeric Supplement
Octonion
Ordinal indicator
Fraktur
Unicode subscripts and superscripts
Enclosed Alphanumerics
Ö
Ɵ
Ơ
Õ
Ó
Ǫ
Ò
Open-mid back rounded vowel
Breve
Open O
Oʻ
O'
O͘
Mid back rounded vowel
Ø
Ꝍ
Ǫ́
Mid front rounded vowel
ⱺ
Inverted breve
Circumflex
Macron (diacritic)
Nasal vowel
Double grave accent
Vietnamese alphabet
Double acute accent
Bilabial click
Dot (diacritic)
Cedilla
Mid central vowel
Hook above
R-colored vowel
Ogonek
International Phonetic Alphabet
Livonian language
Finno-Ugric transcription
Shift Out and Shift In characters
Scribal abbreviation
Ring (diacritic)
Diethyl ether
Nasal bilabial click
Small caps
Caron
O,O′-Diacetyldopamine
P&O
O,O′-Dipivaloyldopamine
O visa
O-methylated flavonoid
O (disambiguation)
O Antiphons
O-GlcNAc
O A e o Z
Douglas O-38
O-Acetylbufotenine
O line
O class
Pui O
O lucenti, o sereni occhi
O series
Tai O
O Come, O Come, Emmanuel
O. Henry Award
Big O
Big O notation
Ping-O-Tronic
O-ring
O-Pivalylbufotenine
Haplogroup O-M119
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 le Ao o le Malo
O-demethylpuromycin O-methyltransferase
P&O Princess Cruises
O-linked glycosylation
Flavonol-3-O-beta-glucoside O-malonyltransferase
Daddy-O
Kamen Rider Den-O + Shin-O
Ó Rothláin
Pig-hoo-o-o-o-ey
O-Acetylserine
O-Bi, O-Ba: The End of Civilization
Google I/O
Protein O-GlcNAcase
Ó Lochlainn
Asynchronous I/O
Vitexin 2"-O-rhamnoside 7-O-methyltransferase
Cyanidin 3-O-rutinoside 5-O-glucosyltransferase
Ó Sé
O-type main-sequence star
Delphinidin 3',5'-O-glucosyltransferase
Tam o' Shanter
Cyanidin-3-O-glucoside 2-O-glucuronosyltransferase
Lycoming O-235
Memory-mapped I/O and port-mapped I/O
Anthocyanin 3-O-glucoside 6''-O-hydroxycinnamoyltransferase
O (German magazine)
Anti-streptolysin O
HNLMS O 20
O scale
Cyrillic O variants
Haplogroup O-M268
The Big O
Haplogroup O-M175
THC-O-acetate
P&O Ferries
O Silêncio Q Precede O Esporro
O tempora, o mores!
Handley Page Type O
USS O-12
W/o
O... Saya
Subdwarf O star
Double-O
Shibuya O-East
Jack-o'-lantern
Te Pīhopatanga o Te Upoko o Te Ika
Yam O
Te o Tsunagō/Ai o Utaō
Continental O-200
Séamus Ó Fearghail
Punk-O-Rama
Lycoming O-290
'O pere e 'o musso
USS O-7
Domnall Ó Cuindlis
Te Pīhopatanga o Te Manawa o Te Wheke
O-Zone
I/O scheduling
Douglas O-2
Anthocyanin 5-O-glucoside 6'''-O-malonyltransferase
Jell-O Gallery
O, The Oprah Magazine
Heme O
O-Bahn Busway
Páidí Ó Sé
Beta-glucogallin—tetrakisgalloylglucose O-galloyltransferase
Ō clan
O-aew
Beta-glucogallin O-galloyltransferase
Luteolin-7-O-diglucuronide 4'-O-glucuronosyltransferase
Five-O
Ó hUiginn
Ō-yoroi
Ádhamh Ó Cianáin
Steve O.
Man o' war
Jell-O
Diarmaid Ó Donnchadha
Máirtín Ó Direáin
Mícheál Ó Cléirigh
The Marquise of O
O family
Antoine Ó Raifteiri
8-hydroxyfuranocoumarin 8-O-methyltransferase
Channel I/O
Tseung Kwan O line
Soleil O
Sunn O)))
5-O-Methylmyricetin
O 12-class submarine
Lycoming O-360
Doyle O-2 Oriole
Five Pointe O
Triple-O
Ō Rissei
Lycoming O-320
Ó Flaithbheartaigh
USS O-6
Flavanone 7-O-glucoside 2"-O-beta-L-rhamnosyltransferase
Big O Tires
Cho-Den-O series
O schöner Mai!
N-acetylneuraminate 7-O(or 9-O)-acetyltransferase
Yi O
O. O. McIntyre
USS O-5
HNLMS O 24
O with tilde (Cyrillic)
Mícheál Ó Ceallaigh
Lycoming O-435
Tomás Ó Fiaich
O Ta-ryŏn
Bit-O-Honey
O-Desmethylangolensin
T and O map
Cruise-O-Matic
Maelbrighte Ó Hussey