Prenocephale (meaning "sloping head"[1]) is a genus of small pachycephalosaurid dinosaur from the Late Cretaceous Nemegt Formation of Mongolia.

[3] Unlike the flattened wedge-shaped skull of Homalocephale (a possible juvenile trait also potentially seen in early growth stages of Pachycephalosaurus), the head of Prenocephale was rounded and sloping.

He considered Tylocephale the sister taxon to the Prenocephale clade, while sinking Sphaerotholus buchholtzae as a subjective junior synonym of "P." edmontonensis.

[8] Wannanosaurus yansiensis Colepiocephale lambei Hanssuesia sternbergi Stegoceras novomexicanum Stegoceras validum Goyocephale lattimorei Homalocephale calathocercos Tylocephale gilmorei Foraminacephale brevis Amtocephale gobiensis Acrotholus audeti Prenocephale prenes Alaskacephale gangloffi Pachycephalosaurus wyomingensis Sphaerotholus buchholtzae Sphaerotholus goodwini As with most of its relatives, scientists do not yet know what these dinosaurs ate.

However the premaxillary teeth and muzzle are not as wideset as in its relative Stegoceras, indicating different feeding preferences, possibly that Prenocephale was a more selective forager.