Ischnochiton elongatus, the lengthened chiton or elongate chiton, is a species of chiton in the family Ischnochitonidae.

[1][2] Ischnochiton elongatus can reach a length of 25–35 millimetres (0.98–1.38 in).

[3] These medium-sized chitons are long oval shaped, with radiating, noduled ribs on the front valve and rows of bumps on the front edge.

[5][6] It lives intertidally and subtidally under rocks and stones.

This Chiton-related article is a stub.