Jan Dlugosz (July 12, 1929, Warsaw, Poland - July 2, 1962 in High Tatras) was a Polish mountaineer and writer.
He lived in Kraków (South Poland).
In 1961 he participated in the first ascent of the Central Pillar of Frêney on Mont Blanc by a British-Polish team (with Don Whillans, Chris Bonington and Ian Clough).