The Torne, also known as the Tornio (Finnish: Tornionjoki, Swedish: Torne älv, Torneälven, Northern Sami: Duortneseatnu, Meänkieli: Tornionväylä), is a river in northern Sweden and Finland. For approximately half of its length it contains the border between these two countries. It rises at Lake Torne (Swedish: Torneträsk) near the border with Norway and flows generally southeast for a distance of 522 kilometres (324 mi) into the Gulf of Bothnia.