Trichocentrum pumilum is a species of orchid found from Brazil to northeastern Argentina.

It is a pseudobulbous epiphyte, and grows primarily in savannahs and montane forests. Trichocentrum pumilum blooms in winter and spring.

 Trichocentrum pumilum is described as a "miniature-sized", mule eared, epiphyte which grows best in hot climates.

The pseudobulbs grow in a small, clustered, broadly ovoid, and compressed fashion, and the plant carries single, apical, coriaceous, suberect, oblong to ligulate, subacute leaves.

Branches are erect, ranging in length from 5–8 cm. Flowers range in size from 5-8mm, with a densely multi-flowered inflorescence with a coriaceous, ovate, acute bracts and small campanulate flowers.