1989–90 NBA season

The season ended with the Detroit Pistons winning their second consecutive NBA Championship, beating the Portland Trail Blazers 4 games to 1 in the NBA Finals.

Notes Teams in bold advanced to the next round.

The division champions are marked by an asterisk.

Home court advantage does not necessarily belong to the higher-seeded team, but instead the team with the better regular season record; teams enjoying the home advantage are shown in italics.

The following players were named NBA Rookie of the Month.