Leonid Aleksandrovich Shamkovich (June 1, 1923 - April 22, 2005) was a chess Grandmaster.

He was born in a Jewish family in Rostov-on-Don in Russia. He became a Grandmaster in 1965 and won several tournaments, with his best victory coming at Sochi in 1967, where he tied for first place with Nikolai Krogius, Vladimir Simagin, Boris Spassky and Alexander Zaitsev. Other notable results included a tie for 3rd at the 1962 Moscow Championship (behind Yuri Averbakh and Evgeny Vasiukov) and finishing third at Mariánske LáznÄ? 1965 (behind Paul Keres and Vlastimil Hort).

Shamkovich left the Soviet Union in 1975, moving first to Israel, then Canada, and finally the United States, where he settled. He continued to play through the 1990s, and wrote several chess books.

His aristocratic bearing and manner of speech earned him the nickname "Prince".

Shamkovich died of complications from Parkinson's disease and cancer in his Brooklyn home on April 22, 2005.