The 1979–80 Boston Celtics season was the 34th season of the Boston Celtics in the National Basketball Association (NBA).
Bolstered by the play of 23-year-old rookie Larry Bird, the Celtics improved from 29–53 the previous year, to 61–21, at the time the best NBA single season turnaround ever, and would cruise to the Eastern Conference finals but lose to the Philadelphia 76ers 4–1.
[1][2] Roster Last transaction: January 22, 1980