Unedogemmula koolhoveni is a species of sea snail, a marine gastropod mollusk in the family Turridae, the turrids.
The species was transferred to Unedogemmula by Powell (1964). Later it was found alive and transferred to Lophiotoma by Li & Li (2008) who synonymized Unedogemmula with Lophiotoma.
The length of the shell attains 40.2 mm.
Fossils of this marine species were found in Miocene strata in Okinawa and Pliocene strata on Java, Indonesia.