|Named By:||Friedrich von Huene in 1932|
|Time Period:||Middle Jurassic|
|Location:||England, Dorset - Inferior Oolite|
|Size:||Roughly estimated to be around 4 meters long, possibly slightly bigger|
|Fossil(s):||Partial post cranial remains and lower jaw, possibly of a juvenile|
|Classification:||| Chordata | Reptilia | Dinosauria | Theropoda | Megalosauridae ||
|Also known as:||| Megalosaurus nethercombensis | Megalosaurus lydekkeri | Eustreptospondylus | Sarcosaurus ||
Magnosaurus (meaning 'large lizard') was a genus of basal tetanuran theropod dinosaur from the Middle Jurassic of England. It is based on fragmentary remains and has often been confused with or included in Megalosaurus.