| Named By: | Adam S. Smith and Peggy Vincent in 2010 |
| Time Period: | Early Jurassic, 183-180 Ma |
| Location: | Germany |
| Size: | 3.35 meters long, skull 37 centimetres long |
| Diet: | Piscivore |
| Fossil(s): | Complete and articulated skeleton with skull that is in ventral view (the underside) |
| Classification: | | Chordata | Reptilia | Sauropterygia | Plesiosauria | Pliosauroidea | Rhomaleosauridae | |
| Also known as: | | Eurycleidus victor | Plesiosaurus victor | Rhomaleosaurus victor | Thaumatosaurus victor | |
Meyerasaurus is an extinct genus of rhomaleosaurid known from Holzmaden, Baden-Wurttemberg of southeastern Germany.