Echinodillo is a genus of woodlice in the family Armadillidae. It contains two species.
Echinodillo cavaticus <small>Green, 1963</small>, the Flinders Island cave slater, is endemic to caves on Flinders Island, Tasmania. It is listed as data deficient on the IUCN Red List.
Echinodillo montanus <small>Jackson, 1935</small> is endemic to the Marquesas Islands.