Aleksander Kosiba (born 18 January 1901 in Libusza — died 18 September 1981 in Wroclaw) was a Polish geographer, geophysicist, glaciologist and climatologist.
Kosiba's undergraduate tertiary studies were at the then Jan Kazimierz University.
He was an honorary member of Norwegian Geographical Society.
Kosiba was involved in a Greenland expedition in 1934 by Denmark.
There he worked for five months - May to September.
In 1978 he published his last scientific work, "The snow, glaciers — ice sheets."