Fusinus is a genus of small to large sea snails, marine gastropod mollusks in the family Fasciolariidae, the spindle snails and tulip snails.

[3] This genus is known in the fossil records from the Cretaceous to the Quaternary (age range: from 94.3 to 0.0 million years ago).

Fossils are found in the marine strata all over the world.

[4] Species in the genus Fusinus include:[5][6] According to the World Register of Marine Species (WoRMS) the following species with accepted names are included within the genus Fusinus[7]