Bodio is a municipality in the district of Leventina in the canton of Ticino in Switzerland .

Bodio was first mentioned in 1227 as Boidi. During the Middle Ages, Bodio and the now abandoned village of Simbra (or Saimola) formed a Degagna in the Giornico area. During the reign of the cathedral of Milan over the three Ambrosian Valleys, in May and November the placita della Leventina meetings were held in Bodio. The Placita della Leventina, was a meeting of the Leventina valley used to administer justice and to discuss local issues. Until the 16th century the village belonged to the parish of Giornico.