John Illingworth

John Illingworth may refer to:


 * John Illingworth (footballer) (1904–1964), English footballer
 * John Illingworth (yacht designer) (1903–1980), English naval engineer
 * J. R. Illingworth (John Richardson Illingworth, 1848–1915), British Anglican priest, philosopher, and academic
 * Juan Illingworth (John Illingworth, 1786–1853), English admiral