Prosansanosmilus is an extinct genus of barbourofelid that lived in Europe during the Late Miocene epoch (16.9—7.246 mya), existing for approximately 9.654 million years.

It differed from other European barbourofelids in having a more plesiomorphic ("ancestral") morphology, with less developed sabretooth adaptations and being smaller.

However, the species is stratigraphically younger than P. peregrinus; and probably part of the African faunal immigration into Europe during the Middle Eocene.

[2] Like all barbourofelids, Prosansanosmilus was very muscular, short legged and probably walked plantigrade (flat-footed).

There are only two species of Prosansanosmilus, which lived in Spain, France and Germany during the Late Miocene epoch.