Aldisa albomarginata is a species of sea slug, a dorid nudibranch, a marine gastropod mollusk in the family Cadlinidae.

[2] This species was described from two specimens found at 7 m and 10 m depth at Earls Cove, British Columbia, Canada 49°45′N 124°01′W / 49.750°N 124.017°W / 49.750; -124.017.

It is known from Vancouver, British Columbia, Canada south to San Diego, southern California, USA.

[3][4]