Dimartinia (after Vicente Di Martino) is an extinct genus of carnivorous metatherian mammals from the Late Miocene Cerro Azul Formation of Argentina.

The Dimartinia holotype specimen, MMH-CH 87-7-111, was discovered in sediments of the Cerro Azul Formation ('Arroyo Chasicó' locality) in Buenos Aires Province, Argentina.

The generic name, Dimartinia, honors Vicente Di Martino, the collector of the holotype and founder of the museum where the specimen is accessioned.

The specific name, pristina, is derived from the Latin word pristinus, meaning "primitive", "early", or "original", referencing the anatomy and relationships of this taxon.

Thylacosmilus Anachlysictis Patagosmilus UF 27881 (unnamed Honda Group sparassodont)[3] Prothylacynus Pharsophorus lacerans Eomakhaira Proborhyaenidae Borhyaenidae