| Named By: | Miklos Kretzoi in 1929 |
| Time Period: | Late Miocene |
| Location: | Eurasia |
| Size: | About 1.5 meters long, 80 kilograms in weight |
| Diet: | Carnivore |
| Fossil(s): | Several specimens |
| Classification: | | Chordata | Mammalia | Carnivora | Feliformia | Barbourofelidae | |
| Also known as: | | Sansanosmilus vallesiensis | |
Sansanosmilus (pronounced - San-San-Oh-SMILE-Uss) is an extinct genus of carnivorous mammal of the family Barbourofelidae (false saber-tooth cats) endemic to Europe and Asia, which lived during the Miocene, 13.6--11.1 mya, existing for approximately 2.5 million years.