Laternulidae, common name lantern clams, is a family of saltwater clams, marine bivalve molluscs in the order Anomalodesmata.

Members of this family have thin, brittle shells that have an elongated oval shape.

The valves are white with concentric sculpturing, low umbones, and a gap at both ends.

The siphons are long and fused for their full length.

The mantle margins are also fused except for a small gap at the anterior end.