| Named By: | E. S. Gaffney, J. H. Hutchison, F. A. Jenkins Jr. & L. J. Meeker in 1987 |
| Time Period: | Early Jurassic 196.5-183.0 Ma |
| Location: | USA, Arizona - Kayenta Formation |
| Size: | About 50 centimetres wide, 60 centimetres long |
| Diet: | Unavailable |
| Fossil(s): | Partial skull and shells of at least two individuals |
| Classification: | | Chordata | Reptilia | Testudines | Cryptodira | |
Kayentachelys ("Kayenta shell") is an extinct genus of stem-turtle from the Early Jurassic Kayenta Formation of northern Arizona. Kayentachelys was about 0.5 m (1.6 ft) wide and 0.6 m (2.0 ft) in length. It lived in an environment dominated by streams and dunes.