Risoba repugnans is a species of moth of the family Nolidae first described by Francis Walker in 1865.

Forewings brownish grey with a basal white patch slightly suffused with bright rufous.

A large apical rufous patch with whitish lunule found on its inner side.

Some rufous patches with white edges found on outer part of inner margin.

Hindwings white with the fuscous outer are and ventrally with cell spot.