Bayangovi (Mongolian: Баянговь, also Bayangov' or Bayangobi, Rich gobi) is a sum (district) of Bayankhongor Province in south-eastern Mongolia.

Outside the small town of Bayangovi are a number of desert sites of natural and cultural interest.

The cave once housed Stone Age human beings 700,000 years ago and features a crystal-lined inner chamber.

At Tsagaan Bulag, 18 km south, a white rock outcrop has the faint imprint of an anthropomorphic figure.

Sixty-six kilometres south-west of Bayangovi is the petrified forest at Ulaan Shand.