The 2020–21 Boston Celtics season was the Celtics' 75th season in the National Basketball Association (NBA). As a result of the COVID-19 pandemic, the regular season for the league began on December 22, 2020, and featured a 72-game schedule rather than the typical 82-game schedule. The Celtics finished the regular season with a 36–36 record, and clinched a playoff spot after defeating the Washington Wizards with a score of 118–100 in the play-in tournament.