
Lev Samuilovich Kleyn (Russian: Лев Самуилович Клейн; 1 July 1927 – 7 November 2019), better known in English as Leo Klejn, was a Russian archaeologist, anthropologist, and philologist. He was born in Vitebsk, Belarus. Klejn's first printed work was published in 1955; his first monograph in 1978.