Henry Dunn may refer to:
Henry Donn (or Dunn; died 1586), English conspirator involved in the Babington Plot Henry Dunn (educationalist) (1801–1878), English educationalist and author Henry Treffry Dunn (1838–1899), English painter, Dante Gabriel Rossetti's assistant Henry Dunn (Harper's Island), a character in the TV series Harper's Island
See also Henry Dunne (1872–1959), Australian rules footballer Harry Dunn (disambiguation)