•
Allan Fitzsimmons (f. 1980s–2000s), United States civil servant •
Arthur Fitzsimons (1929–2018), Irish athlete in football •
Casey FitzSimmons (born 1980), United States athlete in football •
Charles Fitzsimmons (1802–1876), Australian politician and sugar farmer, Member of the Queensland Legislative Assembly (1860–1861, 1865–1868) •
Charles B. Fitzsimons (1924–2001), Irish American actor •
Conor Fitzsimmons (born 1998), British rugby league footballer •
Lowell "Cotton" Fitzsimmons (1931–2004), United States basketball coach •
Cortland Fitzsimmons (1893–1949), American writer, screenwriter, and author of crime fiction •
David Fitzsimons (1950–2008), Australian Olympic athlete •
David Fitzsimons (born 1991), Irish chess player •
David Fitzsimmons (1875–?), Scottish athlete in football •
David FitzSimmons (born 1978), American politician, member of the Minnesota House of Representatives (2013–2015) •
Eoghan Fitzsimons, Irish Attorney General (1994) and barrister •
Foster Fitzsimmons (f. 1930s–1960s), United States dancer, novelist and teacher •
Frank Fitzsimmons (1907–1981), United States labor leader •
Freddie Fitzsimmons (1901–1979), United States athlete in baseball •
Frederick William FitzSimons (1870–1951), South African naturalist •
George Fitzsimmons (public servant) (1858–1933), Australian letter server •
George Fitzsimmons (serial killer) (1937–1999), American serial killer •
George Kinzie Fitzsimons (1928–2013), American Roman Catholic bishop •
Gerry Fitzsimons (1960–2007), British businessman •
Greg Fitzsimmons (born 1966), United States comedian and writer •
Herbert FitzSimons (1898–1970), Australian politician, Member of the New South Wales Legislative Assembly (1930–1944) and Council (1955–1970) •
James E. Fitzsimmons (1874–1966), United States racehorse trainer •
Jason Fitzsimmons (born 1971), Canadian athlete in ice hockey •
Jeanette Fitzsimons (1945–2020), New Zealand politician and environmentalist •
James Fitzsimmons (1870–1948), Canadian politician, member of the Legislative Assembly of British Columbia (1928–1933) •
Jim Fitzsimons (born 1936), Irish politician •
John Fitzsimons (footballer) (1915–1995), Scottish footballer for Alloa, Falkirk and Clyde, doctor with Celtic •
John FitzSimons (born 1943), English javelin thrower •
John Fitzsimmons (1939–2008), Scottish clergyman and broadcaster •
Lesley Fitz-Simons (1961–2013), Scottish actress •
Lorna Fitzsimons (born 1967), British politician •
Matthew Fitzsimmons (1913-?), English football centre half who played for Liverpool •
Maureen O'Hara (born
Maureen FitzSimons; 1920–2015), Irish-American actress •
Maurice J. Fitzsimons, Jr. (1906–1972), American politician •
Michael Fitzsimons (born 1989), Irish Gaelic footballer who plays for Cuala and Dublin •
Orla Fitzsimons (born 1981), Irish rugby union player •
Pat Fitzsimons (born 1950), United States athlete in golf •
Paul Fitzsimons, Irish Gaelic footballer •
Peter FitzSimons (born 1961), Australian rugby union player, journalist, author •
Randy Fitzsimmons (f. 1990s), Swedish musician •
Richard W. Fitzsimons (1922–1991), American farmer and politician •
Riley Fitzsimmons (born 1996), Australian Olympic sprint canoeist • Robert Fitzsimmons, several people: •
Robert James "Bob" Fitzsimmons (1863–1918), British boxer and three division champion •
Robert Stanley "Bob" Fitzsimmons (1917–1998), Australian rules footballer who played for Fitzroy and St Kilda •
Robert J. "Rocky" Fitzsimmons (born 1979), American attorney and politician, member of the West Virginia Senate (2012–014) •
Ronald J. Fitzsimmons (f. 1980s–2000s), United States lobbyist •
Ross Fitzsimons (born 1994), English footballer •
Roy Fitzsimmons (1916–1945), United States explorer •
Shane Fitzsimmons (f. 2000s), Australian fire commissioner •
Shane Fitzsimmons (footballer) (born 1955), Australian rules footballer who played for Melbourne and for West Perth •
Sharyn Hill (née
Fitzsimmons; born 1954), Australian cricket player •
Stephen Fitzsimons (1882–1952), Irish Gaelic footballer •
Steve Fitzsimmons (born 1976), Australian athlete in football •
Stuart Fitzsimmons (1956–2019), British Olympic alpine skier •
Thomas Fitzsimons (1741–1811), American merchant and statesman. Signed U.S. Constitution. •
Tom Fitzsimmons (baseball) (1890–1971), United States athlete in baseball •
Tom Fitzsimmons (actor) (born 1947), American television actor •
Tommy Fitzsimmons (1870–?), Scottish athlete in football •
Vivian Frederick Maynard FitzSimons (1901–1975), South African herpetologist •
Whitney Fitzsimmons, Australian journalist •
William Fitzsimmons (disambiguation), any of several men with variations of that name ==Places with the name==