Che with diaeresis (Ӵ ӵ; italics: Ӵ ӵ) is a letter of the Cyrillic script. Its form is derived from the Cyrillic letter Che (Ч ч Ч ч).
Che with diaeresis is used only in the alphabet of the Udmurt language, where it represents the voiceless palato-alveolar affricate /tʃ/, like the pronunciation of ⟨ch⟩ in "chicken". It is the thirtieth letter of this alphabet.
Udmurt (/ʊdˈmʊərt/; Cyrillic: Удмурт) is a Permic language spoken by the Udmurt people who are native to Udmurtia. As a Uralic language, it is distantly related to languages such as Finnish, Estonian, Mansi, Khanty, and Hungarian. The Udmurt language is co-official with Russian within Udmurtia.
It is written using the Cyrillic alphabet with the addition of five characters not used in the Russian alphabet: Ӝ/ӝ, Ӟ/ӟ, Ӥ/ӥ, Ӧ/ӧ, and Ӵ/ӵ. Together with the Komi and Permyak languages, it constitutes the Permic grouping of the Uralic family. The Udmurt language shares similar agglutinative structures with its closest relative, the Komi language. Among outsiders, it has traditionally been referred to by its Russian exonym, Votyak. Udmurt has borrowed vocabulary from neighboring languages, mainly from Tatar and Russian.