Astraea is a genus of medium to large sea snails, marine gastropod mollusks in the family Turbinidae, the turban snails.

[3] Shells of species within this genus can reach a size of about 60 millimetres (2.4 in).

The outer edges of the coiled whorls are quite flattened, with prominent axial sculpture.

[3] Extant species within this genus include:[4] This genus is known in the fossil records from the Paleocene to the Quaternary (age range: from 61.7 to 0.0 million years ago).

Fossils of species within this genus have been found in the sediments of Europe, Australia, United States, Japan, Venezuela, Colombia and Brazil.