1965–66 NBA season

The Los Angeles Lakers won 45 of 80 games to capture the West Division of the NBA, which produced no league champion 1959–1970.

The Lakers' mediocre center play and more limping from Elgin Baylor held back the club's advancement.

The Cincinnati Royals won 45 games also, but were still stuck in the East Division behind the 76ers and Celtics while the Baltimore Bullets remained in the NBA West.

In the East, Boston got another scare from Cincinnati, who jumped to a 2–1 series lead behind Robertson and Lucas, but the Celtics were able to recover and won the next two games to advance.

In the West, the injury-riddled Baltimore Bullets, led by Don Ohl, were swept by the St. Louis Hawks and player/coach Richie Guerin.

Wilt Chamberlain averaged 28 points and 30 rebounds for the series, but the Celtics won four of five games and featured dominant performances from Bill Russell, Sam Jones and John Havlicek all starred.

Red Auerbach, exhausted from two close series plus the scare from Wilt Chamberlain's Sixers, took his victory cigar to the front office after this year.

x – clinched playoff spot Note: Prior to the 1969–70 season, league leaders in points, rebounds, and assists were determined by totals rather than averages.