Serge Semenenko (1903  – April 24, 1980) was an innovative Ukrainian -born  Hollywood banker in the 1950s and 1960s, representing the First National Bank of Boston. In 1956 he was part of a group of investors who bought out the shares in Warner Bros. Pictures that were sold by Harry Warner and Albert Warner.
The Warners bought the popular Brunswick label in 1930, but the collapse of the record market during the Great Depression cost the studio heavily and the label was sold to the American Record Company at the end of 1931 for a fraction of its former value. As a result, Warner Bros. had shied away from any involvement in the record business for the next 25 years.
According to music historian Fred Goodman, Semenenko had a strong interest in the entertainment business. After joining the Warner Bros. board he pushed studio boss Jack L. Warner to establish a recorded music division, which was eventually incorporated in 1958 as Warner Bros. Records.
In 1967, he resigned as vice-chairman and a director of First Boston after his activities were dissected in a first article in The Wall Street Journal .
- Fred Goodman, The Mansion on the Hill: Dylan, Young, Geffen, Springsteen and the Head-on Collision of Rock and Commerce (Jonathon Cape, London, 1997, ISBN 0-224-05062-1), p.44
- McClintick, David. Indecent Exposure: A True Story of Hollywood and Wall Street (Collins Business Essentials) ISBN 0-06-050815-9