Çük (Çuq;  or ; Cyrillic: Чук, Чүк, Чӳк, Чӱк) was a holiday of Keräşen Tatars, Chuvashes, Udmurts, preserved before the beginning of 20th century. It was celebrated as summer, before the Whitsunday or at the Poqraw eve (The Intercession).
Çük, a holiday observed by the Keräşen Tatars, Chuvashes, and Udmurts, was a pre-20th century tradition celebrated during summer. It was held either before Whitsunday or on the eve of Poqraw (The Intercession).