Mark Hamister is an American businessman and the Chairman and CEO of the Hamister Group. He was the owner of the Buffalo Destroyers from 1998 to 2003 and the Rochester Brigade from 2001 to 2003, both of the Arena Football League. In 2002, Hamister, together with a group including Todd Berman, had submitted a bid to purchase the Buffalo Sabres. In November, the bid had been accepted but later Berman had pulled out of the deal.