O with macron (Latin)

O with macron
Ō ō
Usage
Writing systemLatin script
TypeAlphabetic
Language of originLatin language
In UnicodeU+014C, U+014D
Other
Writing directionLeft-to-right

O with macron (majuscule: Ō, minuscule: ō) is an additional letter of the Latin script, formed from the base letter O with the addition of the macron diacritic mark.

It is used in various Polynesian languages, such as Cook Islands Māori, Dorig, Hawaiian, Hiw, Māori, Marshallese, Marquesan, Mwotlap, Samoan, Tahitian, Tongan, and Vurës, as well as Latgalian, Livonian, Samogitian, and Silesian in Central Europe, Nahuatl in Mexico, Ewondo in Cameroon, and Ogba in Nigeria. The letter is also used in the Hepburn romanization of Japanese, the pinyin romanization system of Standard Chinese, and the ISO 9 standard for romanization of Cyrillic characters.