Oenosaurus is an extinct genus of sphenodontian reptile from the Late Jurassic (Tithonian) aged Mörnsheim Formation of Germany.

[1] The genus is known from a partial skull preserved in ventral view.

The teeth in the upper and lower jaws were fused into tooth plates.

[1] It is likely that Oenosaurus led a durophagous lifestyle as indicated by the broad tooth plates.

This article related to a Jurassic reptile is a stub.