Charaxes mars

{{Short description|Species of butterfly}}

{{Italic title}}

{{Speciesbox

| name = Iron rajah

| image = CharaxesMarsMUpUnAC1.jpg

| image_caption = Male

| image2 = Novitates Zoologicae1899PlateVIII, Charaxes mars madensis, ♀.jpg

| image2_caption = Female C. m. madensis

| taxon = Charaxes mars

| authority = Staudinger, 1885

| synonyms =

• Charaxes mars var. dohertyi Rothschild, 1892
• Charaxes madensis Rothschild, 1899

}}

Charaxes mars, the iron rajah, is a butterfly of the rajahs and nawabs group, i.e. the Charaxinae group of the brush-footed butterflies family. It is endemic to Sulawesi in central Indonesia.{{cite web |title=Point Map of Charaxes mars |url=http://eol.org/data_objects/21159280 |publisher=Discover Life |accessdate=22 November 2013}} Charaxes mars is a large butterfly with forewings with concave outer edge and hindwings each with a tail. The upper side of the forewings is dark blue and light in the basal part. The hindwings are orange with a submarginal line of dark brown ocelli.