O
Unicode subscripts and superscripts
Octonion
Fraktur
Enclosed Alphanumeric Supplement
Ordinal indicator
Enclosed Alphanumerics
Ɵ
Ö
Õ
Ò
Ó
Ơ
Oʻ
Ǫ
Open O
Breve
O'
Ꝍ
Open-mid back rounded vowel
Ø
Mid back rounded vowel
Inverted breve
ⱺ
O͘
Bilabial click
Macron (diacritic)
Ǫ́
Mid front rounded vowel
Vietnamese alphabet
Dot (diacritic)
Double acute accent
Circumflex
R-colored vowel
Livonian language
Hook above
Cedilla
Nasal vowel
Ogonek
Double grave accent
Shift Out and Shift In characters
Finno-Ugric transcription
Scribal abbreviation
Mid central vowel
Diethyl ether
International Phonetic Alphabet
Ring (diacritic)
Small caps
Nasal bilabial click
Caron
O,O′-Diacetyldopamine
P&O
O,O′-Dipivaloyldopamine
O visa
O-methylated flavonoid
O (disambiguation)
O A e o Z
O-GlcNAc
O Antiphons
Douglas O-38
O-Acetylbufotenine
O line
O class
Pui O
O lucenti, o sereni occhi
O series
O Come, O Come, Emmanuel
Big O
Tai O
Ping-O-Tronic
Big O notation
O (Cyrillic)
O-Pivalylbufotenine
O. Henry Award
Yeshe-Ö
Haplogroup O-M119
O-ring
O Tannenbaum
Ó Paí, Ó
O Tempo e o Vento
Isoflavone-7-O-beta-glucoside 6"-O-malonyltransferase
P&O Cruises
O-linked glycosylation
Flavonol-3-O-beta-glucoside O-malonyltransferase
P&O Princess Cruises
O-type star
O le Ao o le Malo
O-demethylpuromycin O-methyltransferase
Kamen Rider Den-O + Shin-O
Daddy-O
Pig-hoo-o-o-o-ey
O-Acetylserine
O-Bi, O-Ba: The End of Civilization
Google I/O
Ó Lochlainn
Ó Rothláin
Protein O-GlcNAcase
O-type main-sequence star
Vitexin 2"-O-rhamnoside 7-O-methyltransferase
Lycoming O-235
Ó Sé
Asynchronous I/O
Cyanidin 3-O-rutinoside 5-O-glucosyltransferase
Tam o' Shanter
Delphinidin 3',5'-O-glucosyltransferase
Anti-streptolysin O
Cyanidin-3-O-glucoside 2-O-glucuronosyltransferase
Memory-mapped I/O and port-mapped I/O
HNLMS O 20
Cyrillic O variants
O tempora, o mores!
The Big O
Anthocyanin 3-O-glucoside 6''-O-hydroxycinnamoyltransferase
Jell-O
Haplogroup O-M175
THC-O-acetate
Subdwarf O star
O scale
O Silêncio Q Precede O Esporro
O (German magazine)
Haplogroup O-M268
Jack-o'-lantern
O... Saya
Shibuya O-East
Double-O
W/o
Handley Page Type O
Te Pīhopatanga o Te Upoko o Te Ika
Te o Tsunagō/Ai o Utaō
Lycoming O-290
Domnall Ó Cuindlis
Yam O
Séamus Ó Fearghail
P&O Ferries
O-Zone
I/O scheduling
Punk-O-Rama
Continental O-200
Heme O
USS O-7
USS O-12
O-Bahn Busway
Douglas O-2
Beta-glucogallin O-galloyltransferase
'O pere e 'o musso
Jell-O Gallery
Te Pīhopatanga o Te Manawa o Te Wheke
Anthocyanin 5-O-glucoside 6'''-O-malonyltransferase
Beta-glucogallin—tetrakisgalloylglucose O-galloyltransferase
O-aew
Five-O
The Marquise of O
Páidí Ó Sé
Man o' war
Ō-yoroi
Luteolin-7-O-diglucuronide 4'-O-glucuronosyltransferase
Ō clan
Steve O.
Ó hUiginn
O, The Oprah Magazine
Diarmaid Ó Donnchadha
Ádhamh Ó Cianáin
Sunn O)))
O family
Channel I/O
Mícheál Ó Cléirigh
Antoine Ó Raifteiri
5-O-Methylmyricetin
8-hydroxyfuranocoumarin 8-O-methyltransferase
Lycoming O-320
Flavanone 7-O-glucoside 2"-O-beta-L-rhamnosyltransferase
O 12-class submarine
Doyle O-2 Oriole
Máirtín Ó Direáin
Tseung Kwan O line
Triple-O
Lycoming O-360
Ó Flaithbheartaigh
Lycoming O-435
O schöner Mai!
Soleil O
Ō Rissei
Big O Tires
O. O. McIntyre
O with tilde (Cyrillic)
Yi O
N-acetylneuraminate 7-O(or 9-O)-acetyltransferase
Cruise-O-Matic
Cho-Den-O series
Five Pointe O
HNLMS O 24
Tomás Ó Fiaich
O salutaris hostia
USS O-5
Maelbrighte Ó Hussey
Bit-O-Honey
O-Desmethylangolensin
O Ta-ryŏn
O Tú o Ninguna
Luteolin-7-O-glucuronide 2"-O-glucuronosyltransferase