Tonia [ˈtɔɲa] is a village in the administrative district of Gmina Doruchów, within Ostrzeszów County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 8 kilometres (5 mi) east of Doruchów, 14 km (9 mi) east of Ostrzeszów, and 142 km (88 mi) south-east of the regional capital Poznań.