David Sarnoff (, Russian: ="ru" xml:lang="ru" >Дави́д Сарно́в, February 27, 1891 – December 12, 1971) was an American businessman and pioneer of American commercial radio and television. Throughout most of his career he led the Radio Corporation of America (RCA) in various capacities from shortly after its founding in 1919 until his retirement in 1970. Sarnoff is credited with Sarnoff's law, which states that the value of a broadcast network is proportional to the number of viewers.