Cytherea lyrata Sowerby, 1851 Meretrix lyrata, the lyrate Asiatic hard clam, also known simply as the hard clam (Vietnamese: Nghêu Bến Tre), is an edible saltwater clam, a marine bivalve mollusc in the family Veneridae, the Venus clams.

This species occurs along the coasts of Vietnam, Taiwan, the Philippines, Sarawak (Malaysian Borneo) and South China.

[1] Right and left valve of the same specimen: In Vietnam, these hard clams are eaten boiled, steamed or roasted.

They are an important export in the eastern and southern parts of Vietnam.

This Veneridae-related article is a stub.