the yángpíng tone (阳平, high-rising tone) of "o".

Ó is the 24th letter of the Czech alphabet and the 28th letter of the Slovak alphabet. It represents /oː/.

In Dutch, the acute Ó accent is used to mark different meanings for words, for example voor and vóór ("for" / "before"), or vóórkomen and voorkómen ("to occur" / "to prevent").

In Emilian, ó is used to represent [o], e.g. sótt [sotː] "dry".

Ó is the 18th letter of the Faroese alphabet and represents /œ/ or /ɔuː/.

Ó is the 25th letter of the Hungarian alphabet. It represents the long vowel /oː/.

Ó is the 19th letter of the Icelandic alphabet and represents /oṷ/.

Ó is widely used in Irish where it has various meanings: the preposition ó "from" the patronymic term Ó "grandson, (usually male) descendant, first or second cousin" (variants: Ua, Uí, Í Uaí). When Irish names were anglicized, the Ó commonly was either dropped or written as O'. the interjection ó "oh"

In Italian, ó is an optional symbol (especially used in dictionaries) sometimes used to indicate that a stressed o should be pronounced with a close sound: córso [ˈkorso], "course", as opposed to còrso [ˈkɔrso], "Corsican" (but both are commonly written with no accent marks when the context is clear). A similar process may occur with é and è, as in *pésca, "fishing", and *pèsca "peach", in which the accent mark is not written (both are written as pesca).

Ó is the 23rd letter of the Kashubian alphabet and represents /o/. It also represents /u/ in southern dialects.