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
This disambiguation page lists articles about people with the same name.
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