William S. Weidner is an American hotelier and business executive renowned for his contributions to the global expansion of the casino and hospitality industry. He served as President and Chief Operating Officer of Las Vegas Sands Corporation from 2002 to 2009, where he was instrumental in pioneering the company's international ventures, including the development of casino resorts in Macau and Singapore. Under his leadership, Las Vegas Sands transformed from a primarily domestic operator into a major player in the Asian gaming market, overseeing projects like The Venetian Macao, which opened in 2007. Born in 1947, Weidner began his career in the hospitality sector after earning a business degree from the University of Minnesota. He gained experience through executive roles at various Las Vegas properties, including the Sands Hotel and Casino, before joining Las Vegas Sands in 1995 as its president. His tenure was marked by aggressive growth strategies and operational expertise, though it ended acrimoniously in 2009 due to reported conflicts with company chairman Sheldon Adelson. Following his departure from Las Vegas Sands, Weidner pursued other business interests, including investments in real estate and gaming-related enterprises. He has maintained a low public profile since then but remains recognized for his influence in shaping modern Las Vegas and the broader integrated resort model worldwide.