Stenoma gymnastis is a moth of the Depressariidae family. It is found in Guyana, French Guiana and Brazil. The wingspan is 21-24 mm. The forewings are light greyish-ochreous, the costal edge tinged with ochreous-whitish. The stigmata are dark fuscous, the plical very obliquely beyond the first discal. There is a faint cloudy fuscous interrupted shade from three-fifths of the costa to two-thirds of the dorsum, forming a curved loop around the end of the cell and there is a series of cloudy fuscous dots from four-fifths of the costa to the dorsum before the tornus, sinuate-indented beneath the costa, then rather strongly curved outwards. A series of dark fuscous marginal dots is found around the apex and termen. The hindwings ochreous-whitish in males and whitish-grey in females.