| Named By: | A. PerezinGarcia & F. Ortega in 2011 |
| Time Period: | Late Jurassic, 151 Ma |
| Location: | Portugal - Lourinha Formation |
| Size: | Unavailable |
| Diet: | Uncertain |
| Fossil(s): | Partial remains of several individuals, including shells |
| Classification: | | Chordata | Reptilia | Anapsida | Testudines | Cryptodira | Pleurosternidae | |
Selenemys is an extinct genus of pleurosternid turtle from the Late Jurassic of Central West of Portugal. It is known from several specimens recovered from the Lusitanian Basin, dating to the upper Kimmeridgian age. It was one of the earliest European pleurosternids, more closely related to the later Cretaceous pleurosternids of Europe than the contemporary pleurosternids of North America. This genus was named by Adan Perez-Garcia and Francisco Ortega in 2011, and the type species is Selenemys lusitanica.
The holotype is housed at the Laboratory of Paleontology and Paleoecology of the ALT-Society of Natural History (Torres Vedras, Portugal)