Peter Hay may refer to:
Peter Háy (born 1944), Canadian writer Peter Grant Hay (1879–1961), Australian brewer and racehorse breeder Peter Thomas Hay (1932–2018), authority on British steam railways Peter Alexander Hay (1866–1952), Scottish watercolourist Peter Seton Hay (1853–1907), New Zealand civil engineer and public servant Peter Hay (sailor), represented Australia in the Dragon World Championships Peter Hay (artist) (1951–2003), British artist and publisher, founder of Two Rivers Press
See also Peter Hayes (disambiguation)