Ostrobothnia refers to various areas in Finland: Ostrobothnia (historical province), a traditional region () of Finland Ostrobothnia County, a county () of the Kingdom of Sweden in 1634–1775 Modern regions () in Finland: Ostrobothnia (administrative region), coastal part of historical Ostrobothnia South Ostrobothnia Central Ostrobothnia North Ostrobothnia
See also Bothnia (disambiguation) Pohjanmaa (disambiguation)