Scolitantides orion, the chequered blue, is a species of butterfly in the family Lycaenidae (gossamer-winged butterflies).

It is found in Europe, Russia and east across the Palearctic to Japan.

Above and beneath rather similar to Pseudophilotes baton but larger and darker, recognizable by the fringes being very distinctly spotted and the white underside abundantly and heavily spotted with black, the hindwing beneath bearing a bright orange-red submarginal band.

Throughout Europe, western and northern Asia, excepting England, the Arctic countries and Japan; from Finland to the Mediterranean islands and from the Atlantic to the Pacific.

Orion is a legendary Boeotian hunter who, after his death, was turned into a constellation by Zeus.