Sakari Severi Tuomioja (29 August 1911 Tampere – 9 September 1964 Helsinki) was a Finnish politician and diplomat who served as Prime Minister of Finland between 1953-1954 and as Ministry for Foreign Affairs between 1951-1952 and as the Governor of the Bank of Finland between 1945-1955.
He was also Finland's ambassador in London and Stockholm.
Tuomioja was the first Finn in high-level United Nations missions.
In particular, he is remembered for acting as a mediator in the Cyprus crisis of 1963–64 and his abrupt death in the performance of his duties.
Tuomioja was also the first Finnish invited to the Bilderberg Group meetings.