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