Chak-chak^{[lower-alpha 1]} (/tʃækˈtʃæk/) is a popular fried dough food in Tatarstan and Bashkortostan.

Chak-chak is made from unleavened dough cut and rolled into hazelnut-sized balls, which are then deep-fried in oil. Optionally, hazelnuts or dried fruit (e.g. apricots and raisins) are added to the mixture. The fried balls are stacked in a mound in a special mold and drenched with hot honey. After cooling and hardening, chak-chak may optionally be decorated with hazelnuts and dried fruits.

Traditional wedding chak-chak is larger and is often covered with candies and dragées. The biggest chak-chak weighed 402.4 kilograms (887 lb) and was prepared on 14 June 2018 during start of the 2018 FIFA World Cup in Kazan.^[2]

• If the dough is fried as noodles, chak-chak is called boxara käläwäse (Tatar: бохара кәләвәсе, [bɔxɑˈrɑ kælæwæˈse], i.e. bukharan käläwä).^[1]
• Kazakh shek-shek is similar to boxara käläwäse.
• Uzbek chakchak comes as half rounded balls, noodles, and flakes.
• Tajik chaqchaq comes in both types, as balls and as noodles.

• List of doughnut varieties
• List of fried dough varieties
• List of Russian dishes
• Bashkir cuisine
• Tatar cuisine
• Lokma (a similar dish originating in Turkey)
• Mee siput
• Rengginang
• Struffoli
• Sachima (a similar dish in Manchu cuisine)
• Gavvalu (a similar dish in India)
• Funnel cake