Mark L. Attanasio (born September 29, 1957) is a Los Angeles businessman and owner of the Milwaukee Brewers. In September 2004, he reached a deal, on behalf of an investment group, to purchase the Brewers from the family of Major League Baseball (MLB) commissioner Bud Selig for an estimated US$223 million. The deal was approved by MLB at the owners' winter meeting on January 13, 2005.