The NBA Defensive Player of the Year Award is an annual National Basketball Association (NBA) award given since the 1982–83 NBA season to the best defensive player of the regular season. The winner is selected by a panel of 124 sportswriters and broadcasters throughout the United States and Canada, each of whom casts a vote for first, second and third place selections. Each first-place vote is worth five points, second-place votes are worth three points, and a third-place vote is worth one. The player with the highest point total, regardless of the number of first-place votes, wins the award. Since the 2022–23 NBA season, winners receive the Hakeem Olajuwon Trophy, named after the two-time defensive player of the year winner.

Sidney Alvin Moncrief is an American former professional basketball player. As an NCAA college basketball player from 1975 to 1979, Moncrief played for the University of Arkansas Razorbacks, leading them to the 1978 Final Four and a win in the NCAA Consolation Game versus #6 Notre Dame. Nicknamed Sid the Squid, Sir Sid, and El Sid, Moncrief went on to play 11 seasons in the National Basketball Association, including ten seasons with the Milwaukee Bucks. He was a five-time NBA All-Star and won the first two NBA Defensive Player of the Year awards in 1983 and 1984. He was elected to the Naismith Memorial Basketball Hall of Fame in 2019.