Mexistenasellus coahuila, the Coahuila isopod, is a species of isopod crustacean in the family Stenasellidae.

It is found in Mexico and Texas[2] in the United States.

Once thought to only live in southern North America, it has been found living outside Jacksonville, Florida in the Hole in Wall Cave.

[3] This discovery was thought to double the range of the Stenasellidae's existence in North America.

This isopod-related article is a stub.