H
- H. Stuart Hughes (1916–1999), American historian, professor and activist
- Henry Hughes, nineteenth century British locomotive builder, see Brush Traction
- Henry P. Hughes (1904–1968) Americaan jurist
- Howard Hughes (1905–1976), pilot, movie producer and playboy
- Howard R. Hughes, Sr. (1869–1924), his father, industrialist and inventor
- Howard Hughes (born 1965), British paedophile and murderer
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