William Rockwell "Rocky" Wirtz (born October 5, 1952) is the owner of the NHL's Chicago Blackhawks.
He is also president of the Blackhawks' parent company, the Wirtz Corporation, a diversified conglomerate headquartered in Chicago.
Wirtz oversees Wirtz Corporation's commercial and residential real estate companies, wine and spirits distributor, formerly Wirtz Beverage Group, now Breakthru Beverage Group, an insurance company and banks in Illinois and Florida.
Wirtz is also half-owner of the Blackhawks' home arena, the United Center, along with Chicago Bulls owner Jerry Reinsdorf.
He and Reinsdorf are co-chairmen of the arena's Executive Committee.