Mystique, formerly Dubuque Greyhound Park & Casino (DGPC), is a combination greyhound race track and casino (racino) located in Dubuque, Iowa. The casino is owned by the City of Dubuque, and operated by the non-profit Dubuque Racing Association, its license holder. It is a member of the Iowa Gaming Association, and shares a gaming license with the Diamond Jo Casino, also in Dubuque. Beginning operations on June 1, 1985, the DGPC became a full-service casino following the introduction of table games in 2005.
Mystique is located at 1855 Greyhound Park Drive, on Chaplain Schmitt Island, near the Mississippi River. The casino, along with attractions in the Port of Dubuque and Downtown Dubuque, have helped to create a large and growing tourism market in Dubuque.