| Named By: | P. Goldin & M. E. Steeman in 2015 |
| Time Period: | Late Miocene, 9.6-8 Ma |
| Location: | Denmark - Gram Formation |
| Size: | Unavailable |
| Diet: | Carnivore/filter feeder |
| Fossil(s): | Partial skull |
| Classification: | | Chordata | Mammalia | Cetacea | Mysticeti | Tranatocetidae | |
| Also known as: | | Mesocetus argillarius | |
Tranatocetus is an extinct genus of mysticete from the late Miocene (Tortonian) of Jutland, Denmark. The type and only species is Tranatocetus argillarius.