O', O’, O`, O´, O‘ or Oʻ may refer to: the anglicized variant of the patronymic term "Ó" 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 Ó, Ò, or Ơ. Oʻ, the twenty-fifth letter of the Uzbek alphabet O′ (with prime symbol) represents the glottalized or creaky vowel "/o̰/" in Taa language ’O or ’o is a male article in Neapolitan language (like in ’O sole mio) See also ’ (apostrophe) ` (grave accent) ´ (acute accent) ‘ (quotation mark) ′ (prime symbol) O (disambiguation)