The Denver Open, also known as the Denver WCT or by its sponsored name United Bank Tennis Classic, was a WCT and Grand Prix affiliated men's tennis tournament played from 1972 to 1982. It was held in Denver, Colorado in the United States and played on indoor carpet courts. The loss of the main sponsor led to the cancellation of the tournament after the 1982 edition.

Jimmy Connors was the most successful player at the tournament, winning the singles competition three times.