The Bogdashkina (Russian: Богдашкина) is a river in the Sakha Republic (Yakutia), Russia.

[1] The river flows north of the Arctic Circle, across desolate territories of the Allaikhovsky District.

[2][3] Not counting the New Siberian Islands the Bogdashkina is the northernmost sizeable river basin of Yakutia.

It has its sources in a small unnamed lake of the northern end of the East Siberian Lowland.

[2] In the summer the river mouth area is a breeding place for migratory birds, including waders and the spectacled eider.