Saxidomus nuttalli is a species of large edible saltwater clam, a marine bivalve mollusk in the family Veneridae, the venus clams.

[1] Common names include California butterclam[1] and Washington clam.

[2] This is a commercially exploited species that attains a length of approximately 15 cm.

[3] This species was harvested by Chumash peoples on the central California coast, at least as early as the Millingstone Horizon.

[4] The shells were used as currency by local native peoples.