Enoplochiton niger is a Southeast Pacific species of chiton, a marine polyplacophoran mollusc in the family Chitonidae, the typical chitons.

[2] With a length of up to 20 cm (7.9 in), Enoplochiton niger is a very large chiton.

Unlike the similar-sized Enoplochiton echinatus of the same region, Enoplochiton niger lacks large spines.

[3] The distribution of Enoplochiton niger ranges along the Pacific coast of South America from Coquimbo in Chile to Talara in Peru.

[3] It inhabits the intertidal zone,[3] and it is omnivorous.