Crassispira lepta is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies. Fossils have been found in Eocene strata in the Paris Basin, France.
Subspecies: Crassispira lepta leptoides (de Boury, 1899) (synonym: Drillia (Crassispira) leptoides (de Boury, 1899)