Engonoceratidae is a family of typically compressed, more or less flat sided and involute ammonites (cephalopod order Ammonitida) from the mid Cretaceous belonging to the Hoplitoidea.

shells have flat sided outer rims ( venters), at least in some stage.

Sutures have numerous auxiliary and adventive elements of similar form, in general radially arranged.

Lobes, pointing apically, may be simple and undivided or may be frilled with short irregular serrations.

The Engoceratidae gave rise in the Late Albian to the Placenticeratidae, which differ in having a more elaborate suture, before dying out in the Early Turonian.