The Bellerophontidae are an extinct family of specialized globose bellerophontids, Paleozoic and early Triassic mollusks of the class Gastropoda.

The shell has a low profile and these possibly were active, fast-moving molluscs.

Knight et al. 1960 in the Treatise on Invertebrate Paleontology[4] consider the Bellerophontidae a very large family made up of a number of subfamilies and tribes.

The classification presented is: Order Bellerophontida Ulrich & Scofield, 1897 Recently, Peter J. Wagner presented cladograms which divide this assemblage into a number of different groups, as well as combining the Bellerophontidae with the family Sinuitidae.

The taxonomy of the Gastropoda by Bouchet & Rocroi, 2005[3] categorizes Bellerophontidae like this: Bouchet & Rocroi, on page 271 (2005),[3] also state that the assignation of "symmetrical univalved mollusks "bellerophonts" either to Gastropoda or to Monoplacophora or Tergomya is controversial."