Yu with macron (Ю̄ ю̄; italics: Ю̄ ю̄) is a letter of the Cyrillic script. Its ligature is derived from the Cyrillic letter Yu (Юю) by adding a macron on top.
Yu with macron is used in the Aleut (Bering dialect), Evenki, Mansi, Nanai, Negidal, Orok, Ulch, Kildin Sami, and Selkup languages.
References
See also Cyrillic characters in Unicode