Letholycus

{{Short description|Genus of ray-finned fishes}}

{{Automatic taxobox

| taxon = Letholycus

| display_parents = 3

| authority = M. E. Anderson, 1988

| type_species = Melanostigma microphthalmus

| type_species_authority = Norman, 1937{{Cof family|family=Lycodinae|access-date=3 November 2022}}

}}

Letholycus is a genus of marine ray-finned fishes belonging to the family Zoarcidae, the eelpouts. This is a small genus with only two species found in the southwestern Atlantic Ocean.