MacLeay or Macleay or McLeay may refer to:
People Alexander Macleay (1767–1848), Scottish civil servant and entomologist. George Macleay (1809–1891), Australian explorer and politician. George McLeay (1892–1955), Australian politician Glenn McLeay (born 1968), New Zealand cyclist John McLeay Jr. (1922–2000), Australian politician John McLeay Sr. (1893–1982), Australian politician Ken MacLeay (born 1959), English-born Australian cricketer. Leo McLeay (born 1945), Australian politician. Paul McLeay (born 1972), Australian politician William John Macleay (1820–1891), Australian politician and naturalist. William Sharp Macleay (1792–1865), British entomologist.
Places Electoral district of Macleay, New South Wales, Australia. Macleay Island, Moreton Bay, Queensland, Australia. Macleay Museum of science, University of Sydney, Australia. Macleay River, New South Wales, Australia. Macleay Shire, a former LGA in New South Wales, Australia.
Animals Macleay's dorcopsis, Dorcopsulus macleayi, a marsupial. Macleay's honeyeater, Xanthotis macleayanus, a bird. Macleay's mustached bat, Pteronotus macleayii. Macleay's swallowtail, Graphium macleayanus, a butterfly. Macleay's spectre, Extatosoma tiaratum, a stick insect.