Hypselodoris bertschi is a species of sea slug or dorid nudibranch, a marine gastropod mollusk in the family Chromodorididae.

This nudibranch is known only from Hawaii in the central Pacific Ocean.

[2] Hypselodoris bertschi has a translucent white body with longitudinal opaque white lines flecked with black-purple spots.

The gills and rhinophores are translucent white, lined with orange tips and base.

This species can reach a total length of at least 25 mm.