Greater Finland

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Greater Finland (Finnish: Suur-Suomi; Estonian: Suur-Soome; Swedish: Storfinland), was an irredentist and nationalist idea that was a subset of Pan-Finnicism which emphasized the territorial expansion of Finland. The most common concept of Greater Finland saw the country as defined by natural borders encompassing the territories inhabited by Finns and Karelians, ranging from the White Sea to Lake Onega and along the Svir River and Neva River—or, more modestly, the Sestra River—to the Gulf of Finland. Some proponents also included the Torne Valley (in Sweden), Ingria, and Estonia.

The idea of a Greater Finland rapidly gained popularity after Finland became independent in December 1917. The idea has lost support after World War II (1939–1945).