Bohdan Stefan Winiarski (27 April 1884 – 4 December 1969) was a Polish politician and jurist who served as President of the International Court of Justice from 1961 to 1964.

After obtaining Ph.D., Winiarski started working at the University of Poznań, obtaining ranks of deputy professor in 1921 and associate professor in 1922.

During those years, he also served as vice chairman of the League of Nations Communications and Transport Committee and chairman of the League of Nations Inland Navigation Law Committee.

During World War II he settled in Great Britain where he served as the President of the Bank of Poland under London Government.

[3] In 1946, Winiarski was elected to the International Court of Justice in The Hague,[4] and then served as its president from 1961 to 1964.