Fountainea nessus, also known as the superb leafwing or Cindy's leafwing, is a Neotropical butterfly in the family Nymphalidae.

The adult butterfly's wings are mainly dark brown from the dorsal view, with pink and blue patches on the forewings of the male, the female instead has silver patches.

The wings mimic dead leaves from the ventral view.

It lives in Colombia, Ecuador, Venezuela, and Peru.

This article related to members of the butterfly subfamily Charaxinae is a stub.