Angelosaurus dolani ('Dolan's Angel lizard', Olson & Berrbower 1953) was a pelycosaur (an extinct clade) of reptile. It is known from a partial skull from the Middle San Angelo Formation, Knox County, Texas, USA. It dates from the Kungurian (Early Permian). It was from three to three and a half metres long and weighed about 300 kilograms. It belongs to the family Caseidae. Like its contemporary, another caseid, Cotylorhynchus, it was large, heavily built, and herbivorous.