Tyyne Lilja Leivo-Larsson (née Leivo; 3 March 1902 Uusikirkko – 1 August 1977 Helsinki) was a Finnish Ambassador and MP. She was the first Finnish woman to serve as Ambassador in Oslo from 1958 to 1966 and as Envoy to Reykjavík in 1958–1964 (Ambassador 1964–1965) and the first Nordic woman, who led the government when she served as Deputy Prime Minister for Reino Kuuskoski in 1958.
Leivo-Larsson was Deputy Minister of Social Affairs and Social Affairs in 1948–1950 at the Fagerholm I, Törngren and Kekkonen V 1954–1956 and in 1958 in Kuuskoski and Fagerholm II Governments as Social Minister in 1954–1954 and 1956–1957.
She was first elected to the Parliament from the Social Democratic Party in 1948–1958 and then as a member of the Social Democratic Union of Workers and Smallholders party for the years 1966–1970. During this time she was chairman of the Social Democratic Union of Workers and Smallholders Parliamentary Group. She married Bror Nils Larsson in 1937.
Tyyne Leivo participated at the Red Guard side at the age of 16 in the civil war in the Battle of Tampere. Possibly, she was in the group that at the last moment broke out of the city. Poet Kössi Kaatra describes her as a young, ready-to-fight youth who also dared drive the wounded.
Tyyne Leivo completed a middle school in 1918 in the new girls school in Helsinki. She studied in 1925–1929 at the High School as journalism but did not complete the degree.