Zatrachys is an extinct genus of large and flat-headed zatracheid temnospondyl from the early Permian of North America.

Zatrachys was named by American paleontologist Edward Drinker Cope in 1878 for the type species, Z. serratus, based on a partial skull from the early Permian of Texas.

[4] Urban et al. (2007) reported material attributed to Z. serratus from the late Carboniferous and the early Permian of West Virginia.

Like all zatracheids, Zatrachys is easily recognized by the presence of a large opening in the snout, the internarial fontanelle or fenestra.

Other features that distinguish this genus are the presence of prominent spiky projections from the posterior skull (maxilla and quadratojugal), bosses and ridges on the lower jaw, a supratemporal that borders the otic notch, long and slender tabular horns and short postparietal horns, contact between the palatine and the vomer to fully enclose the choana on the palate, and a U-shaped skull profile intermediate to that of Acanthostomatops (broad and parabolic) and Dasyceps (elongate).