| Named By: | R. Aoki in 1983 |
| Time Period: | Pleistocene |
| Location: | Japan - Ibaraki Formation |
| Size: | Skull 1 meter long. Total body length up to 8 meters |
| Diet: | Carnivore/Piscivore |
| Fossil(s): | Skull and partial post cranial remains |
| Classification: | | Chordata | Reptilia | Crocodylomorpha | Crocodilia | Tomistominae | |
| Also known as: | | Tomistoma machikanensis | |
Toyotamaphimeia machikanensis is an extinct tomistomine crocodylian from Pleistocene-aged strata of Japan. It is closely related to the false gharial, and lived 400,000 years ago, and was originally described as a member of the same genus, Tomistoma. T. machikanensis was a fairly large crocodylian with a 1 m (3.3 ft) skull and a total length up to 8 m (26 ft).