| Named By: | R. Kellogg in 1934 |
| Time Period: | Late Miocene, 11.6-10 Ma |
| Location: | USA, California, Los Angeles County - Modelo Formation |
| Size: | Unavailable |
| Diet: | Filter feeder |
| Fossil(s): | Skull remains |
| Classification: | | Chordata | Mammalia | Cetacea | Mysticeti | Cetotheriidae | |
Mixocetus is a genus of extinct baleen whale belonging to the family Tranatocetidae. It is known only from the late Miocene (Tortonian) of Los Angeles County, California.