Alexander Mikhailovich Chernin (Russian: Александр Михайлович Чернин; born 6 March 1960) is a Soviet-born Hungarian chess grandmaster and trainer.

Born in Kharkiv, Ukrainian SSR, as a youth he frequently succeeded in tournaments and climbed rapidly through the junior rankings to participate at the very highest level.

There were many tournament victories, either outright or shared, including Irkutsk 1980, Copenhagen 1984 (and 1986 with Vasily Smyslov), Stary Smokovec 1984, Polanica Zdroj (Rubinstein Memorial) 1988 (with Alexander Goldin), Prague 1989 and Marseilles 1990 (with Evgeny Bareev).

The pinnacle of his playing career undoubtedly occurred in 1985, when he became a Grandmaster, won the Soviet Championship (jointly with Viktor Gavrikov and Mikhail Gurevich) and scored well in the Gammarth (Tunisia) Interzonal for a place in the Montpellier Candidates Tournament.

At another first time event, the World Blitz Championship held in Saint John 1988, he finished joint third (with Kiril Georgiev, after Mikhail Tal and Rafael Vaganian).