Thaba Putsoa (Blue Mountain) is a mountain in the Maseru District of Lesotho.

It lies along the road to the Mohale Dam, approximately 70 kilometres to the southeast of the capital Maseru.

The mountain attains a height of 3,096 metres.

Thaba Putsoa has some of the coolest temperatures in Lesotho.

This Lesotho location article is a stub.