Glycymeris bimaculata is a marine bivalve mollusc in the family Glycymerididae.

[1] Shells of Glycymeris bimaculata reach a size of about 80–115 millimetres (3.1–4.5 in).

[2][3] This species is one of the largest bivalves in the Mediterranean Sea.

Shells have a round shape with quite variable markings.

This species is widespread in the Mediterranean Sea.