Hemilepidotus gilberti, Gilbert's Irish lord, is a species of marine ray-finned fish belonging to the family Agonidae, the poachers and sea ravens.

This species occurs in the Northwestern Pacific Ocean from Hokkaido to the Bering Sea.

Hemilepidotus gilberti was first formally described in 1904 by the American ichthyologists David Starr Jordan and Edwin Chapin Starks with its type locality given as Hakodate on Hokkaido.

[1] The specific name honors Jordan's fellow Stanford University academic, the ichthyologist and fisheries biologist, Charles Henry Gilbert.

[3] Hemilepidotus gilberti is found in the Northwestern Pacific Ocean from the Strait of Tartary, northeastern Sakhalin, the western Kamchatka Peninsula east into the Bering Sea as far as the Commander Islands and south to the southeastern coast of Korea, Gulf of Patience and along the western and southern coasts of Hokkaido.