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The Korean Basketball League Defensive Player of the Year Award (Korean: 최우수수비상) is an annual Korean Basketball League (KBL) award given to the best defensive player during the regular season. The awardee is selected from players voted into the Defensive Best 5 (Korean: 수비 5걸) team. In addition to contributing to their team's overall defensive record, selected players must accumulate high averages in the following statistical categories: blocks, steals and defensive rebounds.
Winners
^
Denotes player who is still active in the KBL
†
Denotes team which won the Championship that season
Player (X)
Denotes the number of times the player has been selected for the Defensive Best 5
Player (in bold text)
Indicates the player who won the Defensive Player of the Year Award
There were no Defensive Best 5 selections from the 2011–12 season until the 2013–14 season. During that time period, only the Defensive Player of the Year Award was awarded to one player.
Prior to the founding of the professional Korean Basketball League, the predecessor National Basketball Festival (농구대잔치) ended its final season in January 1997. The first season of the KBL began play in February 1997 to facilitate the transition. Since the 1997–98 season, the KBL season runs from October until April.
^ Ratliffe became a naturalized South Korean citizen in 2018 and has gone by his Korean name "Ra Gun-ah" ever since.
Due to the COVID-19 pandemic, in March 2020, the KBL board of directors voted to end the season early, in the middle of the fifth round, and cancel the play-offs. Instead the KBL board of directors declared Wonju DB Promy and Seoul SK Knights as joint first place on the league table.