Lepidophyma dontomasi, also known commonly as MacDougall's tropical night lizard and la lagartija nocturna de MacDougall in Mexican Spanish, is a small species of lizard in the family Xantusiidae. The species is endemic to Mexico.
The specific name, dontomasi, is in honor of the collector of the holotype, naturalist , who was called Don Tomás by the local Mexicans.
Lepidophyma dontomasi is known only from the type locality on Cerro Lachiguiri in the Mexican state of Oaxaca, where it was collected at elevation. However, it may be more widespread.
The preferred natural habitats of Lepidophyma dontomasi are pine forest and grassland.
Lepidophyma dontomasi is ovoviviparous.