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

[3] The holotype of this nudibranch was collected at 11 m (36 ft) depth from Philip’s Reef (33°58.326′S 25°40.748′E / 33.972100°S 25.679133°E / -33.972100; 25.679133), Port Elizabeth, Algoa Bay, Cape Province, South Africa.

Two additional specimens in the original description were from warmer water sites further north at Park Rynie (30°20′02″S 30°44′08″E / 30.333811°S 30.735542°E / -30.333811; 30.735542), Natal and Umgazana (31°42′07″S 29°24′57″E / 31.702024°S 29.415939°E / -31.702024; 29.415939), Eastern Cape, South Africa.

[1] A specimen from Pointe Evatra, South Madagascar (24°58.1′S 47°6.1′E / 24.9683°S 47.1017°E / -24.9683; 47.1017) was sequenced for three genes in a landmark study which resulted in the description of 17 new species of Hypselodoris.

[4] Hypselodoris rudmani has a translucent body dotted with white patches, and covered in small blue spots.