Truncatella californica, common name of the Californian truncatella, is a species of very small amphibious (between sea and land) snail, a gastropod mollusk in the family Truncatellidae.

This species occurs on coastlines in the Eastern Pacific: in California and Baja California, Mexico.

The adult size of the shell is 6 millimetres (0.24 in).

[2] Members of the order Neotaenioglossa are mostly gonochoric and broadcast spawners.

Embryos develop into planktonic trochophore larvae and later into juvenile veligers before becoming fully grown adults.