FitzGerald or Fitzgerald, is an Irish surname of Hiberno-Norman origin. It is a patronymic derived from the prefix Fitz- from the Latin filius- plus Gerald, thus meaning "son of Gerald”. In Goidelic languages, e.g. the Irish language, it is rendered Mac Gearailt.^[1]

• Adolphus L. Fitzgerald (1840–1921), Justice of the Supreme Court of Nevada
• Alan Fitzgerald (satirist) (1935–2011), Australian journalist, satirist and politician
• Alexis FitzGerald Snr (1916–1985), Irish politician
• Alexis FitzGerald Jnr (1945–2015), Irish politician
• Alice Fitzgerald (1875–1962), American nurse
• Annie Fitzgerald (1844–1934), American landowner
• Barry Fitzgerald (1888–1961), Irish actor
• Barry Fitzgerald (investigator), paranormal investigator for SyFy Channel's Ghost Hunters International
• Brian Fitzgerald (disambiguation), multiple people
• Brinsley FitzGerald (1859–1931), British stockbroker
• Caroline Fitzgerald (1865–1911), expatriate American poet
• Casey Fitzgerald, multiple people
• Charles Fitzgerald (1791–1887), governor of Gambia; governor of Western Australia
• Charles Patrick Fitzgerald (1902–1992), scholar of China
• Ciaran Fitzgerald (born 1952), Irish rugby union player
• Dai Fitzgerald (1872–1951), Welsh international rugby player
• Deirdre FitzGerald (born 1936), Australian lawyer
• Desmond FitzGerald (politician) (1888–1947), Irish revolutionary, poet and politician
• Desmond FitzGerald, 29th Knight of Glin, president of the Irish Georgian Society
• Edmund Fitzgerald (disambiguation), multiple people
• Edward FitzGerald (disambiguation), multiple people
• Eithne FitzGerald (born 1950), Irish politician
• Ella Fitzgerald (1917–1996), U.S. jazz singer
• Ena Fitzgerald (1889-1962), English novelist, poet
• F. Scott Fitzgerald (1896–1940), American novelist and short story writer
• Faith Thayer Fitzgerald (1943–2021), American physician, medical educator, and public speaker
• Fanny Emma Fitzgerald (later Fanny Grattan Guinness; 1831–1898), British writer and evangelist
• Fern Fitzgerald (born 1947), American actress
• Fionn Fitzgerald (born 1990), Irish football player
• Frances Fitzgerald (disambiguation), multiple people
• Francis Fitzgerald (disambiguation), multiple people
• Frank Fitzgerald (1885–1939), U.S. governor of Michigan
• Garret FitzGerald (1926–2011), seventh Taoiseach of the Republic of Ireland
• Garret A. FitzGerald (born 1950), Irish pharmacologist
• Garrett M. Fitzgerald (1806–1859), American politician
• Gene Fitzgerald (1932–2007), Irish politician
• Gerald Fitzgerald (disambiguation), multiple people
• Geraldine Fitzgerald (1913–2005), Irish-American actress
• George FitzGerald (disambiguation), multiple people
• George FitzGerald (1851–1901), Irish physicist
• Glynis Fitzgerald, American academic administrator
• Hermione FitzGerald (1864–1895), Duchess of Leinster
• Hermione FitzGerald (born 1985), Irish professional golfer
• Howie Fitzgerald (1902–1959), American baseball player
• Jack Fitzgerald (1873–1929), founder member of the Socialist Party of Great Britain
• James FitzGerald (disambiguation), multiple people
• Jim Fitzgerald (businessman) (1926–2012), American businessman and philanthropist
• Joan Fitz-Gerald (born 1948), American politician
• John Fitzgerald (disambiguation), multiple people
• John F. Fitzgerald, Mayor of Boston Massachusetts and grandfather of President John Fitzgerald Kennedy
• John Fitzgerald Kennedy, United States president
• John Fitzgerald (Medal of Honor) (1873–1948), American Medal of Honor recipient
• John D. FitzGerald, Irish economist
• Joseph Fitzgerald (disambiguation), multiple people
• Judith Fitzgerald (1952–2015), Canadian poet
• Judkin-Fitzgerald baronets (Created 1801), of Lisheen, Co Tipperary, Ireland
• Karen Fitzgerald, American artist
• Kevin Fitzgerald (born 1951), U.S. veterinarian; appeared on the television program Emergency Vets
• Kevin W. Fitzgerald (1950–2007), American politician
• Larry Fitzgerald (born 1983), American football player
• Lawrence J. Fitzgerald (died 1918), NYS Treasurer 1886–1889
• Les Fitzgerald, Scottish footballer
• Lewis Fitz-Gerald (born 1958), Australian actor and television director
• LeMoine FitzGerald (1890–1956), Canadian artist, a member of the Group of Seven
• Lorna Fitzgerald (born 1996), English actress
• Lou Fitzgerald (1919–2013), American baseball player, scout and manager
• Martin Fitzgerald (disambiguation), multiple people
• Maurice FitzGerald (died 1176), (Anglo Norman) baron, progenitor of the famous Geraldines.
• Meryle Fitzgerald (1925–2004), All-American Girls Professional Baseball League ballplayer
• Michael Fitzgerald (disambiguation), multiple people
• Nick Fitzgerald (born 1996), American football player
• Pamela Fitzgerald (camogie) (born 1984), Irish camogie player
• Pat Fitzgerald (born 1974), U.S. football coach
• Paudie Fitzgerald (1933–2020), Irish cyclist
• Patrick Fitzgerald (born 1960), U.S. attorney; special prosecutor in the CIA leak scandal
• Penelope Fitzgerald (1916–2000), British poet, novelist and biographer
• Percy Hetherington Fitzgerald (1834–1925), Anglo-Irish author and critic
• Peter Fitzgerald (disambiguation), multiple people
• Robert Fitzgerald (disambiguation), multiple people
• Ryan Fitzgerald (born 1976), Australian television presenter
• Sally Fitzgerald, New Zealand judge
• Sarah Fitz-Gerald (born 1968), Australian women's squash player
• Scott Fitzgerald (disambiguation), multiple people
• Susan Fitzgerald (1949–2013), Irish actress
• Stephen FitzGerald (born 1938), Australian ambassador, diplomat
• Tara Fitzgerald (born 1967), British actress
• Thomas Fitzgerald (disambiguation), multiple people
• Tom Fitzgerald (disambiguation), multiple people
• William Fitzgerald (disambiguation), multiple people
• Zelda Fitzgerald (1900–1948), wife of F. Scott Fitzgerald

• Penny Fitzgerald, character from The Amazing World of Gumball
• Martin Fitzgerald, character from Without a Trace
• Jeremy Fitzgerald, character from the Five Nights at Freddy's franchise
• Ralph Fitzgerald, character from World Without End, by Ken Follet

• FitzGerald dynasty^[2]