| Named By: | Roger B. J. Benson, Mark Evans & Patrick S. Druckenmiller in 2012 |
| Time Period: | Early Jurassic, 199.6-198 Ma |
| Location: | England - Blue Lias Formation |
| Size: | Skull 18 centimetres long |
| Diet: | Carnivore/Piscivore |
| Fossil(s): | Skull and partial post cranial skeleton |
| Classification: | | Chordata | Reptilia | Sauropterygia | Plesiosauria | Rhomaleosauridae | |
Stratesaurus is an extinct genus of small-bodied rhomaleosaurid plesiosaur known from the Early Jurassic period (most likely earliest Hettangian stage) of the United Kingdom. It contains a single species, S. taylori.