Sigapatella novaezelandiae, common name the circular slipper limpet, is a species of medium-sized sea snail, a marine gastropod molluscs in the family Calyptraeidae.

The white or yellowish-white shell is marked by growth lines.

The shell is covered by a thin, fibrous, yellowish periostracum.

The interior of the shell is white, more or less stained or blotched with violet.

[2] This marine species is endemic to New Zealand.