1969–70 Boston Celtics season

The 1969–70 Boston Celtics season was the 24th season for the franchise of in the National Basketball Association (NBA). This was the first time the Celtics had missed the playoffs since the 1949–50 season, ending a 19-year playoff streak. This was also the first season without Hall of Famer Bill Russell, who retired following the 1968–69 season after winning his 11th championship.

This was the first team and last until 1998–99 Chicago Bulls to miss the playoffs after winning a championship the previous year.

Regular season

 * x = clinched playoff spot

Awards and records

 * John Havlicek, All-NBA Second Team
 * John Havlicek, NBA All-Defensive Second Team
 * Jo Jo White, NBA All-Rookie Team 1st Team