| Leonid Stein | |
|---|---|
 Leonid Stein in 1969 | |
| Full name | Leonid Zakharovich Stein |
| Country | Soviet Union |
| Born | November 12, 1934 Kamianets-Podilskyi, Ukrainian SSR, Soviet Union |
| Died | July 4, 1973 (aged 38) Moscow, Russian SFSR, Soviet Union |
| Title | Grandmaster (1962) |
| Peak rating | 2620 (July 1972) |
| Peak ranking | No. 11 (July 1972) |
Leonid Zakharovych Stein (Ukrainian: Леонід Захарович Штейн; November 12, 1934 – July 4, 1973) was a Soviet chess Grandmaster from Ukraine. He won three USSR Chess Championships in the 1960s (1963, 1965, and 1966), and was among the world's top ten players during that era.