As you can see, the Chicago Bears have had a player winning the defensive player of the year award 3 times. Here is the list:
Mike Singletary (1985)Mike Singletary (1988)Brian Urlacher (2005)
Frankly, with all the dominant defensive players that the Bears have had in the past, I am a little surprised that only 2 different players have won the award. However, I'm sure that if the award was a team award instead of an individual one, the Bears would have a lot of them...