Myshkino () is a rural locality (a selo) in Konstantinovsky Selsoviet, Kulundinsky District, Altai Krai, Russia. The population was 374 as of 2013. There are 2 streets.
Myshkino lies in the Kulunda Steppe, near lake Bolshoye Shklo to the northeast. It is located 7 km northeast of Kulunda (the district's administrative centre) by road. Kulunda is the nearest rural locality.