Eptatretus goliath new species, is described from a specimen caught at the head of the Hauraki Canyon off the northeast North Island, New Zealand, at 811 m depth. It differs from all other seven-gilled Eptatretus in having three-cusp multicusps in anterior and posterior rows, 11–13 unicusps in anterior rows, nine unicusps in posterior rows, total cusps 54, 14–15 prebranchial pores, 57–58 trunk pores, 13–14 tail pores, 92 total pores, and a prominent ventral finfold. The single specimen, at 1275 mm TL and 6.2 kg, is the largest hagfish yet known.