| Named By: | William T. Blows in 2015 |
| Time Period: | Barremian Cretaceous |
| Location: | England - Weald Clay Formation |
| Size: | Roughly estimated at about 5 meters long |
| Diet: | Herbivore |
| Fossil(s): | Partial post cranial skeletal remains including limb bones vertebrae ribs and armour plates |
| Classification: | | Chordata | Reptilia | Dinosauria | Ornithischia | Thyreophora | Ankylosauria | |
| Also known as: | | Polacanthus rudgwickensis | |
Horshamosaurus is a genus of herbivorous ankylosaurian dinosaur from the Early Cretaceous of England.