大锥体康吉鳗（学名：Ariosoma major），又名大美体鳗，为糯鳗科美体鳗属下的一个种。

Ariosoma major is an eel in the family Congridae (conger/garden eels). It was described by Hirotoshi Asano in 1958, originally as a subspecies of Alloconger shiroanago, which was later moved under the genus Ariosoma. It is a marine, temperate water-dwelling eel which is known from the eastern China Sea, Japan, and Taiwan, in the northwestern Pacific Ocean. It has a widespread distribution, and inhabits sandy regions. Males can reach a maximum total length of 53 centimetres.