
The ground tyrants (Muscisaxicola) are a genus of passerine birds belonging to the tyrant flycatcher family Tyrannidae. There are about 13 different species. They are ground-dwelling birds which inhabit open country in South America, particularly the Andes and Patagonia. Several southern species are migratory, moving northward for the winter. Ground tyrants feed on insects and other invertebrates, mainly by picking them from the ground.

The black-fronted ground tyrant is a species of bird in the family Tyrannidae. It breeds in the southern Andes and winters north, reaching southern Peru. Its natural habitat is subtropical or tropical high-altitude grassland.

The cinereous ground tyrant is a species of bird in the family Tyrannidae. The term cinereous describes its colouration. It is found in Argentina, Bolivia, Chile, and Peru. Its natural habitat is subtropical or tropical high-altitude grassland.
The cinnamon-bellied ground tyrant is a species of bird in the family Tyrannidae, the tyrant flycatchers.

The dark-faced ground tyrant is a small passerine bird belonging to the tyrant flycatcher family. It is a ground-dwelling bird that breeds in the southern Andes region and the Falkland Islands. It feeds on small invertebrates such as flies and moths.

The ochre-naped ground tyrant is a species of bird in the family Tyrannidae, the tyrant flycatchers, specifically the ground tyrants.

The paramo ground tyrant, also known as the paramo ground-tyrant, is a species of bird in the tyrant flycatcher family, Tyrannidae. plain-capped ground tyrant was formerly considered to be a subspecies of M. alpinus but is now commonly treated as a separate species. The name "plain-capped ground tyrant" is sometimes used for M. alpinus.
The puna ground tyrant is a species of bird in the family Tyrannidae. It is found in Argentina, Bolivia, Chile, and Peru. Its natural habitats are subtropical or tropical high-altitude grassland and swamps.

The rufous-naped ground tyrant is a species of bird in the family Tyrannidae. It is found in Argentina, Bolivia, Chile, and Peru. Its natural habitats are subtropical or tropical high-altitude shrubland and subtropical or tropical high-altitude grassland.

The spot-billed ground tyrant is a species of bird in the family Tyrannidae.

Taczanowski's ground tyrant or plain-capped ground tyrant is a species of bird in the family Tyrannidae. It is found in Bolivia and Peru. Its natural habitat is subtropical or tropical high-altitude grassland.

The white-browed ground tyrant is a species of bird in the family Tyrannidae. It breeds in the Andes in Argentina and Chile between 1,500 and 4,000 m above sea-level. It migrates north to Bolivia, Colombia, Ecuador and Peru. It is a vagrant to the Falkland Islands. Its natural habitat is subtropical or tropical high-altitude grassland.
The white-fronted ground tyrant is a species of bird in the tyrant flycatcher family Tyrannidae. It is found in Bolivia, Chile, and Peru. Its natural habitats are subtropical or tropical high-altitude grassland and swamps.