Calcinus morgani, commonly known as Morgan's hermit crab, is a species of hermit crab in the family Diogenidae found in the Indo-West Pacific region, the type locality being Indonesia.

The rostral lobe is triangular and the lateral projections very small and blunt.

[2] This hermit crab was at one time thought to be synonymous with Calcinus gaimardii but that species has the front half of the shield dark brown and lacks the bright blue on the eye stalks which are entirely orange, apart from a little blue on the corneas.

[2] Calcinus morgani is found in the tropical and subtropical Indo-Pacific region, its range extending from Madagascar to western, northern and eastern Australia, the Philippines, Indonesia and other western Pacific island groups.

[3] It is typically found in the intertidal zone of coral reefs and on rocky shores exposed to strong wave action.