Vasum, common name the vase snails or vase shells, is a genus of mostly rather large predatory sea snails, marine gastropod mollusks in the subfamily Vasinae within the family Turbinellidae.

The shells have a thick periostracum, a low spires, and 2, 3 or 4 plaits on the columella.

The animal (of Vasum) is slow-moving, timid and inactive, shrinking quickly within the shell on the slightest alarm.

The operculum is ovate, acute, with an apical nucleus; it is very thick, claw-like, and partially free at the hind part.

The dentition resembles somewhat that of the Buccinidae, differing in the lateral teeth; it differs widely from the Nassidae, and quite as much from that of the Fasciolariidae [2] Species of this genus are circumtropical; also off Australia (Northern Territory, Queensland, Western Australia) Species within the genus Vasum include: