1990–91 Dallas Mavericks season
The 1990–91 Dallas Mavericks season was the 11th season for the Dallas Mavericks in the National Basketball Association. During the off-season, the Mavericks signed free agent All-Star forward Alex English, while acquiring his teammate, All-Star guard Fat Lever from the Denver Nuggets, and Rodney McCray from the Sacramento Kings.
However, the Mavericks troubles would start early as Lever, and Roy Tarpley were both lost early in the regular season due to season-ending knee injuries; while on the injured list, Tarpley would again be suspended for substance abuse by the NBA. Despite winning four of their first five games of the season, the Mavericks struggled and lost 10 of their next 13 games. Their struggles continued as they lost eight consecutive games near the end of the season, finishing in sixth place in the Midwest Division with a 28–54 record.
Rolando Blackman led the team in scoring with 19.9 points per game, while Derek Harper averaged 19.7 points, 7.1 assists and 1.9 steals per game, and Herb Williams provided the team with 12.5 points, 6.0 rebounds and 1.5 blocks per game. In addition, McCray averaged 11.4 points and 7.6 rebounds per game, while James Donaldson provided with 10.0 points and 8.9 rebounds per game, English contributed 9.7 points per game, and second-year forward Randy White averaged 8.8 points and 6.4 rebounds per game.
Harper finished tied in seventh place in Defensive Player of the Year voting, and also finished tied in eighth place in Most Improved Player voting. Following the season, English retired.
Draft picks
| Round | Pick | Player | Position | Nationality | College |
| 2 | 49 | Phil Henderson | SG | Duke |