The Largehead conger (Bathycongrus varidens) is an eel in the family Congridae (conger/garden eels). It was described by Samuel Garman in 1899, originally under the genus Uroconger. It is a marine, deep water-dwelling eel which is known from southern Canada to Chile, in the eastern Pacific Ocean. It dwells at a depth range of 165-935 metres. Males can reach a maximum total length of 100 centimetres.