Robert Glen "Bobby" Doyle (August 14, 1939 – July 30, 2006) was an American singer, bassist, and pianist. He is best known for his early work with a young Kenny Rogers and for a brief stint with Blood, Sweat & Tears. He played piano on two tracks on BS&T's 1972 album New Blood. Doyle continued as a solo artist, releasing multiple singles and albums including an appearance on the soundtrack for the 1971 film Vanishing Point. In the 1980s, Doyle on piano, Rick Moses on bass and William Walton on drums, backed Brunswick recording artist Sunny Nash.