Compsotorna oligarchica is a moth in the Xyloryctidae family. It was described by Meyrick in 1890. It is found in Australia, where it has been recorded from New South Wales and Queensland.
The wingspan is 22-28 mm. The forewings are whitish ochreous, with a few fine scattered black scales and with a fuscous-grey straight longitudinal streak above the middle from the base to near the apex, margined beneath the first with blackish and then with an ochreous suffusion, and above and posteriorly by a white suffusion reaching almost to the costa. There is a triangular reddish-brown spot in the disc at two-thirds, with a central transverse pale mark, its upper side rounded and whitish-margined, intersecting the fuscous longitudinal streak, its two lower sides black-margined. The hindwings are whitish-ochreous.