Si Siman (born Ely E. Siman Jr.; January 17, 1921 – December 16, 1994) was an American country music executive as a radio producer, talent agent, songwriter, record producer, television producer and music publisher who helped transform the sound of music in the Ozarks after World War II and into the 1980s. He discovered Country Music Hall of Fame Members Chet Atkins and Porter Wagoner, and secured record deals for The Browns and Brenda Lee among others; and was the key figure behind Ozark Jubilee, the first network television series to feature America's top country music stars. According to the Encyclopedia of Country Music, he was "the driving force in the emergence of Springfield, Missouri, as a country music center in the 1950s."