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.