Acanthocardia aculeata, the spiny cockle, is a species of saltwater clams, marine bivalve molluscs in the family Cardiidae.

The shell of Acanthocardia aculeata can reach a size of 50–115 mm.

This shell is robust, broadly oval, with a heart-shaped profile, equivalve and inflated, with crenulated margins.

The surface shows 20-22 prominent radial ribs, with rows of sharp spines, especially at sides.

Right and left valve of the same specimen: Acanthocardia aculeata can be found in the Mediterranean Sea and in North East Atlantic.