John Sinnott may refer to: John Sinnott (VC) (1829–1896), Irish recipient of the Victoria Cross John Sinnott (American football) (born 1958) John Sinnott (politician) (1905–1960), Canadian MP John Sinnott SJ (active 1948), rector of Beaumont College, Berkshire, England John T. Sinnott (born 1948), American physician, scientist, and business executive
See also John Sinnott Elementary School, Milpitas, California John Synnott (1895-?), Irish Gaelic footballer