Memphis offa is a species of leafwing found in South America.
Memphis offa is a butterfly that exhibits sexual dimorphism, with both sexes having a humped costal edge, a hook-like internal angle, and a concave inner edge. The upper part of the male is dark blue with a metallic blue basal part while that of the female is brown discreetly suffused with blue.The distal spot before the apex is double and there is also a diffuse spot before the middle of the border of the forewing. The male's underside is dark brown, the female's is yellow, both mimic a dead leaf.