Becklespinax is a genus of large theropod dinosaur based on a type specimen of three tall-spined vertebrae found in 1884 in Sussex, England by the fossil collector Samuel H. Beckles. The fossils are believed to have been from the Early Cretaceous. This animal was probably on the order of 8 meters (26 feet) long and 1.5 tonnes (1.5 tons) in mass.