Stanisław Kulczyński (1895–1975) was a Polish botanist and politician.
Son of Władysław Kulczyński the zoologist. Professor of Lwów University (in the Second Polish Republic, its rector from 1936). Opponent of ghetto ławkowe, resigning his position at the university in 1938 in protest. Member of the Polish Secret State, took part in the underground education in Poland during World War II. After the war, when Lwów was annexed by the Soviet Union, he moved to "Regained Territories" (Wrocław), where he became active in the Wrocław University and Wrocław Politechnic. He joined the communist Stronnictwo Demokratyczne party, was elected to Sejm and was a member of several governmental commissions. Stanislaw Kulczynski was deputy chairman of the Polish Council of State 1956–1969 and as such one of four acting chairmen of the Chairmen of the Council of State (head of state) from August, 7 to August, 12 1964.
Kulczyński was awarded the Order of the Builders of People's Poland (1964), the Order of the Banner of Labour 1st class and the Grand Cross of the Order of Polonia Restituta. In 1963, the University of Wroclaw, Wroclaw University of Technology awarded him an honorary doctorate in 1965.