Diablophis is a genus of Late Jurassic stem-snake from the Morrison Formation of North America.

[1] Diablophis has been recovered as a basal snake, though this placement is disputed.

The cladogram from figure 4b in Caldwell et al.'s 2015 study is replicated below.

[1] Anguimorph root Diablophis Eophis Portugalophis Parviraptor aff.

Parviraptor Dinilysia Sanajeh Yurlunggur Wonambi Najash Coniophis Scolecophidia Uropeltidae Anilius Haasiophis Eopodophis Pachyrachis Loxocemus Xenopeltis Bolyeriidae Tropidophiidae Acrochordidae "Basal colubroids" Ungaliophiidae Erycniae Pythoninae Boinae