Kadaya () is a rural locality (a selo) in Kalgansky District, Zabaykalsky Krai, Russia. Population: There are 13 streets in this selo.
This rural locality is located 28 km from Kalga (the district's administrative centre), 424 km from Chita (capital of Zabaykalsky Krai) and 5,749 km from Moscow. Bugutuy is the nearest rural locality.