Cantharis soeulensis is a species of beetle in the Cantharidae family. It was first described in 1922 by Maurice Pic. The species epithet, soeulensis, describes the beetle as being found in Seoul.
It is found in South Korea, in Gangwon-do, Gyeonggi-do, Gyeongsangbuk-do, and Chungcheongnam-do.