Diaphorodoris papillata is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusc in the family Calycidorididae.

[2] This species was described from Naples, Italy; Villefranche-sur-Mer and Banyuls-sur-Mer, France.

It is reported from the Strait of Gibraltar to Israel.

[3] It was reported from Canary Islands in 2016.

[4] The maximum recorded body length is 10 mm.