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