Buff-breasted Mountain Tanager is a species of bird in the Thraupidae family and the order Passeriformes, it is measures around 19 centimeters.

A relatively small and inconspicuous mountain tanager found in the high subtropical and temperate areas of the Andes. Blue up with yellow belly and black head. The beige chest band is not so conspicuous. Look for the blue eyebrows with unique sequins. Equal sexes. It is found alone or in couples, usually moving silently through the understory and the edge of the forest. It often follows flocks of mixed species.

It is found in Bolivia, Colombia, Ecuador, Peru, and Venezuela.

Its natural habitat is subtropical or tropical moist montane forests.