Udalovka (Russian: Удаловка; Altay: Ала-Кайыҥ, Ala-Kayıñ) is a rural locality (a selo) in Turochaksky District, the Altai Republic, Russia.

Udalovka is located 23 km northwest of Turochak (the district's administrative centre) by road.

Dmitriyevka and Turochak are the nearest rural localities.

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