The Diamantina tapaculo (Scytalopus diamantinensis) is a species of bird in the family Rhinocryptidae.

The flanks are buff with dark bars, which differentiate it from the similar but unbarred mouse-colored tapaculo.

It inhabits some of the remaining patches of dense forest in a region otherwise characterized by campo rupestre, a biome of grassland and rocky outcrops.

[6] The Diamantina tapaculo's song is a simple note, quickly repeated, often for more than a minute [1].

[6] The IUCN has assessed the Diamantina tapaculo as Endangered because "[it] has a very small range with fewer than five locations and its habitat is declining owing to the replacement of natural vegetation by coffee and banana plantations, collection of firewood for domestic and industrial use and unregulated tourism.