Treaty of Tartu (Finland–Russia)

Treaty of Tartu
Russian: Тартуский мирный договор; Finnish: Tarton rauha; Swedish: Fredsfördraget i Dorpat;
	The Finland–Russia border as decided in the Treaty of Tartu. Petsamo (red) became part of Finland, while Repola and Porajärvi (green) were handed back to Russia.
Type	Peace treaty
Signed	14 October 1920
Location	Tartu, Estonia
Effective	31 December 1920 (according to article 39 of the treaty)
Expiration	1939; (beginning of the Winter War)
Parties	Russian SFSR; Finland;
Languages	Russian; Finnish; Swedish;

The Treaty of Tartu (Russian: Тартуский мирный договор; Finnish: Tarton rauha; Swedish: Fredsfördraget i Dorpat) was signed on 14 October 1920 between Finland and Soviet Russia after negotiations that lasted nearly five months. The treaty confirmed the border between Finland and Soviet Russia after the Finnish Civil War and Finnish volunteer expeditions in Russian East Karelia that resulted in annexation of several Russian districts.

The treaty was signed in Tartu, Estonia, at the building of the Estonian Students' Society. Ratifications of the treaty were exchanged in Moscow on 31 December 1920. The treaty was registered in the League of Nations Treaty Series on 5 March 1921.