'''C. Michael Armstrong''' is chairman of the Board of [[ComcastCorporation]], the largest cable company in the United States.
Prior to serving as chairman, C. Michael Armstrong served as chairman of the board and CEO of AT&T Corporation. At AT&T, he led the communications services company, with more than 80 million customers, 120,000 employees and $51 billion in revenues. Armstrong joined AT&T from Hughes Electronics, where he had been chairman and CEO for six years.