| Named By: | J. F. Parham & N. D. Pyenson in 2010 |
| Time Period: | Late Campanian |
| Location: | Mexico |
| Size: | Unavailable |
| Diet: | Durophagous |
| Fossil(s): | Partial Remains |
| Classification: | | Chordata | Reptilia | Testudines | Cryptodira | Chelonioidea | |
Mexichelys is an extinct monotypic genus of sea turtle which lived in Mexico during the Cretaceous. The only species is Mexichelys coahuilaensis. Mexichelys was erected in 2010 as a replacement name for Euclastes coahuilaensis, a species named in 2009.
Cladogram based on Lynch and Parham (2003) and Parham and Pyenson (2010):