Duriavenator is a genus of theropod dinosaur described in 2008. It was excavated in Dorset. The type species is D. hesperis, formerly known as Megalosaurus hesperis.
Duriavenator lived about 170 million years ago. It is one of the oldest-known tetanurans. The genus name combines the Latin name of Dorset, Duria, with Latin for "hunter", venator. This genus has also gone under the unofficial name "Walkersaurus".