Triconodontidae is an extinct family of small, carnivorous mammals belonging to the order Eutriconodonta, endemic to what would become Asia, Europe, North America and probably also Africa and South America[2][3] during the Jurassic through Cretaceous periods at least from 190–66 mya.

[4][1] Triconodontids can be distinguished from other eutriconodonts by the shape of their molars, which bore three main cusps of roughly equal size.

During occlusion, the upper and lower molars interlocked tightly, producing a self-sharpening cutting edge.

[4] However, a 2020 study on Priacodon suggests that triconodontids occluded their molars in the same manner as other eutriconodonts (so-called "embrasure occlusion"), with the middle cusp (cusp A/a) fitting between two opposing molars.

[7][8] Cladogram after Gaetano & Rougier, 2011:[2] Priacodon Triconodon Trioracodon Arundelconodon Meiconodon Astroconodon Alticonodon Corviconodon Jugulator Ichthyoconodon Argentoconodon Volaticotherium