Boris Nikolaevich Katalymov (Russian: Борис Николаевич Каталымов; 13 June 1932 – 1 February 2013), also spelled Katalimov, was a Soviet and later Kazakhstani chess player. He was awarded the title of International Master by FIDE in 1996. Katalymov was multiple times champion of Kazakhstan. He took the silver medal in the 1995 World Senior Chess Championship, held in Bad Liebenzell, Germany.The Katalymov Variation of the Sicilian Defence is named after him.