Synnott is a surname. Notable people with the surname include:Andrew Synnott, Irish composer Bob Synnott (1912–1985), American basketball player Del Synnott, Irish actor Frank Synnott (1890–1945), Canadian ice hockey player Hilary Synnott (1945–2011), British diplomat Joe Synnott (1893–1945), Irish Gaelic footballer John Synnott (1895–????), Irish Gaelic footballer Mark Synnott, American rock climber and author Noel Synnott, Irish football player Peter Synnott (1903–????), Irish Gaelic footballer Stephen P. Synnott, American astronomer and Voyager scientist William R. Synnott (1929–2010), American organizational theorist