Stephen Alan “Steve” Wynn (born January 27, 1942) is an American business magnate. He played a pivotal role in the 1990s resurgence and expansion of the Las Vegas Strip. His companies refurbished or built what are now widely recognized resorts in Las Vegas, including the Golden Nugget, The Mirage, Treasure Island, Bellagio, Wynn, and Encore.

Now, as Chairman of the Board and Chief Executive Officer of Wynn Resorts, Limited, Wynn has developed Wynn Las Vegas, which opened on April 28, 2005; Wynn Macau, which opened in September 2006; Encore at Wynn Las Vegas, which opened December 22, 2008; and Encore at Wynn Macau, which opened on April 21, 2010.