Geitodoris immunda is a species of sea slug or dorid nudibranch, a marine gastropod mollusk in the family Discodorididae.

[2] Distribution of Geitodoris immunda includes Gulf of Mexico, Costa Rica, Venezuela, Brazil and Panama.

[2] Dorsum is with a complex network of low ridges covering the entire surface, with some conical tubercles at the intersections.

[2] Background color is grayish-brown with numerous opaque white dots and some darker brown areas.

[3][2] It was found under coral rubble in a reef habitat in Panama.