Q Casino is a casino located in Dubuque, Iowa. It also was a greyhound race track until racing ceased there on May 15, 2022. The facility is 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 track became a full-service casino following the introduction of table games in 2005.