Igor Platonov (January 18, 1934 – November 13, 1994) was a Soviet Ukrainian chess player. He was active between 1958 and 1984, with his best years from 1967 to 1972, when he earned the title of Grandmaster of the Soviet Union (Гроссмейстер СССР). Top tournament results included a tie for first in the Kiev Championship of 1963, a tied 3rd-4th place in the very strong 1964 Trade Union Championship, a tied 7th-9th place in the 1969 Soviet Zonal at Moscow, and 2nd place in the José Raúl Capablanca Memorial tournament, Cienfuegos 1972. He played in five straight Soviet finals from 1967 to 1971. After his active career, he became a chess trainer.