Laevicardium, common named egg cockles, is a genus of saltwater clams or cockles, marine bivalve molluscs in the family Cardiidae, the cockles. They are unusual among the cockles in that they have smooth, rounded, egg-shaped valves.

Species: There are 33 species in Laevicardium:

• Laevicardium attenuatum
• Laevicardium biradiatum
• Laevicardium brasilianum
• Laevicardium castaneum
• Laevicardium clarionense
• Laevicardium compressum
• Laevicardium crassum (Gmelin, 1791) — Norwegian egg cockle
• Laevicardium decorticatum
• Laevicardium elatum (Sowerby, 1833) — Giant egg cockle
• Laevicardium eliodelfabroi Cossignani, 2024
• Laevicardium etheringtoni
• Laevicardium gorgasi
• Laevicardium laevigatum (Linnaeus, 1758) — egg cockle
• Laevicardium leptorimum
• Laevicardium lobulatum
• Laevicardium lyratum
• Laevicardium mortoni (Conrad, 1830) — Morton´s egg cockle
• Laevicardium multipunctatum
• Laevicardium nemo
• Laevicardium nemocardiforme
• Laevicardium oblongum
• Laevicardium parisiense
• Laevicardium parkinsoni
• Laevicardium pedernalense
• Laevicardium pictum (Ravenel, 1861) — Ravenel´s egg cockle
• Laevicardium pristis
• Laevicardium rudentis
• Laevicardium serratum
• Laevicardium substriatum
• Laevicardium sybariticum (Dall, 1886) — Dall´s egg cockle
• Laevicardium tegalense
• Laevicardium tenuisulcatum
• Laevicardium tertium
• Laevicardium tristiculum
• Laevicardium venustulum