Guyatt is a surname. Notable people with this surname include:
Gordon Guyatt (born 1953), Canadian physician and professor Jim Guyatt (1939–1996), Australian rules footballer Nicholas Guyatt (born 1973), British historian, author and lecturer Owen Guyatt (1921–1991), Australian rules footballer Richard Guyatt (1914–2007), British designer and professor Tess Guyatt (born 1991), Canadian curler
Other Guyatt Park ferry wharf, Brisbane, Australia Guyatt Ridge, in Antarctica, named after Malcolm J. Guyatt
See also Gyatt , a US Navy destroyer converted into the first guided missile destroyer