Sceloenopla unicostata is a species of beetle of the family Chrysomelidae. It is found in Costa Rica.
Adults reach a length of about 7.9-9.3 mm. The antennae and elytra (except for the lateral and apical margins) are black, while the head and pronotum (except for the base) are rosaceous.
The larvae have been recorded mining the leaves of an unidentified Viscaceae species.
The species name is derived from the Latin word uni (meaning one) and costa (meaning rib) and refers to the one costa on each elytron.