Zimmer's tody-tyrant (Hemitriccus minimus) is a species of bird in the family Tyrannidae, the tyrant flycatchers.

Early specimens were eventually reexamined and determined to be the same as "H. aenigma", what was at the time of its description thought to be a new species.

The previous H. m. minimus was recognized as a species, merged with H. aenigma, and by the principle of priority became the present H.

Their wings are dusky with yellow edges on the flight feathers that give a two-toned effect.

By far the largest area is in Brazil, roughly from northwestern Acre and Amazonas states east to Pará and south to Tocantins and Mato Grosso and into northeastern Bolivia.

It takes most of its prey using short upward sallies from a perch to grab it from the underside of leaves.

The song of Zimmer's tody-tyrant is a "simple, high, rather sharp 'wtttti' trill (fast, upslurred 'w' colliding with the 1st 't')".

"The species is sensitive to human disturbance and is suffering from widespread deforestation in Pará, Amazonas and particularly Mato Grosso, which has increased markedly since the 1960s due to road building, ranching, smallholder agriculture, mining and hydroelectric development.