Kazimierz Zarankiewicz (2 May 1902 – 5 September 1959) was a Polish mathematician and Professor at the Warsaw University of Technology who was interested primarily in topology and graph theory.

Zarankiewicz was born in Częstochowa, to father Stanisław and mother Józefa (née Borowska).

[1] He studied at the University of Warsaw, together with Zygmunt Janiszewski, Stefan Mazurkiewicz, Wacław Sierpiński, Kazimierz Kuratowski, and Stanisław Saks.

During World War II, Zarankiewicz took part in illegal teaching, forbidden by the German authorities, and was eventually sent to a concentration camp.

He served as president of the Warsaw section of the Polish Mathematical Society and the International Astronautical Federation.