Boris Vasilievich Spassky is a Russian chess grandmaster who was the tenth World Chess Champion, holding the title from 1969 to 1972. Spassky played three world championship matches: he lost to Tigran Petrosian in 1966; defeated Petrosian in 1969 to become world champion; then lost to Bobby Fischer in a famous match in 1972.

The World Chess Championship is played to determine the world champion in chess. The current world champion is Ding Liren, who defeated his opponent Ian Nepomniachtchi in the 2023 World Chess Championship. Magnus Carlsen, the previous world champion, had declined to defend his title.