4 championships.
The Celtics won three championships during the 1980s -- in 1980-81, 1983-84 and 1985-86.
3. They won in 1981, 1984, and 1986
The Celtics have won 17 NBA championships.....
17 Championships.
12
17 championships.
Three
The Boston Celtics have won 17 NBA championships.
The Boston Celtics
Out of 13 seasons, Russell won 11 Championships with the Celtics.
3 NBA Championships (1981, 1984, 1986)