Rigio (Greek: Ρήγιο) is a village in the eastern part of Didymoteicho municipality, Evros regional unit, Greece.

It is 13 km east of the centre of Didymoteicho, on the right bank of the river Evros, where it forms the border with Turkey.

The nearest villages are Pythio to the south, Asimenio to the west and Sofiko to the northwest.

The Alexandroupolis–Svilengrad railway[4] passes through the village, with a small unstaffed station to the east of the settlement, with a limited service to Dikaia and Alexandroupoli.

According to the latest population census, 10 years ago, Rigio had 100 permanent residents[4]