| Named By: | J. A. Jenson in 1985 |
| Time Period: | Late Jurassic, 153 Ma |
| Location: | USA, Colorado, Montrose County - Morrison Formation, Brushy Basin Member. Wyoming, Converse county - Morrison Formation |
| Size: | Estimated between 33-34 meters long |
| Diet: | Herbivore |
| Fossil(s): | Post cranial remains of more than one individual |
| Classification: | | Chordata | Reptilia | Dinosauria | Saurischia | Sauropoda | Diplodocidae | Diplodocinae | |
| Also known as: | | Dystylosaurus edwini | Ultrasauros macintoshi | 'Jensenosaurus' | |
Supersaurus (meaning "super lizard") is a genus of diplodocid sauropod dinosaur first discovered by Vivian Jones of Delta, Colorado, in late Jurassic period rocks of the middle Morrison Formation of Colorado in 1972, and later in Portugal under the name S. lourinhanensis. The fossil remains came from the Brushy Basin Member of the formation, dating to about 153 million years ago.