John Calcraft is the name of several individuals in the same family:
John Calcraft (1726–1772), English army agent and politician John Calcraft (the younger) (1765–1831), English Member of Parliament, illegitimate elder son and heir of John Calcraft John Hales Calcraft (1796–1880), British Member of Parliament, son of John Calcraft the younger John Calcraft (1831–1868), British Member of Parliament, grandson of John Calcraft