Anthony "Tony" Alexander Dean, OOnt (born August 19, 1953) is a Canadian senator and former Ontario civil servant. He was secretary of the Cabinet, head of the Ontario Public Service, and the clerk of the Executive Council from 2002 to 2008. Ontario Premier Dalton McGuinty described him as "the ultimate public servant, exhibiting on a daily basis the drive to get things done, and the diplomacy required to have them done well". In 2009, he was made a member of the Order of Ontario in recognition for having "transformed the Ontario Public Service".