O', OâÂÂ, O`, Oô, Oâ or Oû may refer to:
- the anglicized variant of the patronymic term "ÃÂ" in Irish names (like in O'Sullivan)
- short for "of" or "on" (like in Pot o' Gold, John o' Groats or o'clock)
- a misspelling of the letter "O" with a diacritic like ÃÂ, ÃÂ, or ÃÂ.
- Oû, the twenty-fifth letter of the Uzbek alphabet
- Oâ² (with prime symbol) represents the glottalized or creaky vowel "/oð/" in Taa language
- âÂÂO or âÂÂo is the masculine singular article in Neapolitan (as in âÂÂO sole mio "my sunshine")
See also