Howard received 585 points, including 114 first-place votes, from a panel of sportswriters and broadcasters. Only five other players received first-place votes.
Kevin Garnett of Boston was second with 77 points and Tyson Chandler of Dallas was third with 70 points.
Howard, a seventh-year veteran, finished second in the league with 14.1 rebounds per game and fourth in blocks with 2.38 per contest. The Magic gave up 93.5 points per game, fourth-best in the NBA, en route to a 52-30 regular-season record and the fourth seed in the Eastern Conference playoffs.
Howard also led the league with 66 double-doubles, including six 20-point, 20-rebound games. He recorded at least 1,000 rebounds and 100 blocked shots for the sixth straight year.