Hypolimnas dexithea

{{Short description|Species of butterfly}}

{{Italic title}}

{{Speciesbox

| name = Hypolimnas dexithea

| image = DiademaDexitheaHewitson.jpg

| taxon = Hypolimnas dexithea

| authority = (Hewitson, 1863)[https://archive.org/stream/proceedingsofgen63busi#page/n106/mode/1up Hypolimnas dexithea]

| synonyms =

• Diadema dexithea Hewitson, 1863
• Diadema imperialis Guenée, 1865

}}

Hypolimnas dexithea (Madagascar diadem) is a species of Hypolimnas butterfly endemic to Madagascar. The species was described in 1863 by William Chapman Hewitson from a specimen collected by J. Caldwell from Antananarivo in Madagascar. It later became one of the species targeted by collectors on account of its size and colour.