Crassispira nana is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.
Subspecies: †Crassispira nana clarae (A.E.M. Cossmann & G. Pissarro, 1913) (Eocene strata in the Paris Basin) (synonym: Crassispira (Tripia) clarae (Cossmann & Pissarro, 1913) )
Fossils have been found in Eocene strata in the Paris Basin, France.
