Lesław Marian Bartelski (September 8, 1920 – March 27, 2006) was a Polish writer, perhaps best known for his work, Warsaw Ghetto Thermopolye and his novel The Blood-stained Wings.

During World War II, he was member of the Polish resistance (1941–1945), fighting against Nazi occupation.

During the war, he wrote for the underground magazine Sztuka i Naród (Art and Nation), beginning his literary career.

[1] After the war, Bartelski studied law at Warsaw University, and began a writing career.

He was active in a large number of organizations, including Polish Writer's Association (where he served as the chair of its Warsaw branch from 1972 to 1978).