| Named By: | Paul Upchurch, Philip D. Mannion & Michael P. Taylor in 2015 |
| Time Period: | Early Cretaceous, 140 Ma |
| Location: | England - Hastings Beds Group |
| Size: | Uncertain due to lack of fossil remains, however, humerus is recorded as being 59.9 centimetres long, ulna, 42.1 centimetres long and radius 40.4 centimetres long. Using more complete genera such as Camarasaurus results in a reconstructed length of about 6.5 meters long, though this is just a best guess |
| Diet: | Herbivore |
| Fossil(s): | Fore limb bones including humerus (upper fore leg bone) and an ulna and radius (lower leg bones). A skin impression is also known |
| Classification: | | Chordata | Reptilia | Dinosauria | Sauropodomorpha | Sauropoda | Macronaria | |
| Also known as: | | Pelorosaurus becklesii | |
Haestasaurus is a genus of herbivorous sauropod dinosaur, belonging to the Macronaria, that during the Early Cretaceous lived in the area of present-day England. The only species is Haestasaurus becklesii.