Namesakes
Harald I Fairhair
(a.k.a. Harold) (m) c. 850-c. 933 
Norwegian Kings and Queens 872-930
Harald I Bluetooth
(a.k.a. Harold) (m) 910-986
Danish Kings and Queens 958-986
Harald II Greycloak
(a.k.a. Harold) (m) c. 935-970
Norwegian Kings and Queens 961-970
Harald II
(a.k.a. Harold) (m) c. 996-1018
Danish Kings and Queens 1014-1018
Harald III Hardrada
(a.k.a. Harold) (m) 1015-1066
Norwegian Kings and Queens 1046-1066
Harold I Harefoot
(m) ?-1040
English and British Kings and Queens 1035-1040
Harald III Hen
(a.k.a. Harold) (m) 1040-1080
Danish Kings and Queens 1074-1080
Harold II
(m) ?-1066
English and British Kings and Queens 1066
Harald IV Gille
(a.k.a. Harold) (m) 1103-1136
Norwegian Kings and Queens 1130-1136
Harold
(m) ?-1168
Saints
Harry Davenport
(m) 1866-1949
Notable Actors and Entertainers (actor)
Edwin Flack
(middle name Harold) (m) 1873-1935
Olympic Medalists 1896 1500 m (gold)
G. H. Hardy
(middle name Harold) (m) 1877-1947
Notable Philosophers and Thinkers
Harold A. Wilson
(m) 1885-1932
Olympic Medalists 1908 1500 m (silver)
Harold Clarke
(m) 1888-1969
Olympic Medalists 1924 diving - plain high (bronze)
Harold Hardwick
(m) 1888-1959
Olympic Medalists 1912 swimming - 1500 m freestyle; swimming - 400 m freestyle; swimming - 4x200 m freestyle relay (bronze/gold)
Harry Hyland
(m) 1889-1969
Hall-of-Famers 1962 (ice hockey)
Harry Cameron
(m) 1890-1953
Hall-of-Famers 1962 (ice hockey)
Hal Roach
(m) 1892-1992
Notable Filmmakers
Harry "Punch" Broadbent
(m) 1892-1971
Hall-of-Famers 1962 (ice hockey)
Notable Athletes (ice hockey)
Hal Foster
(m) 1892-1982
Notable Artists
Harold Lloyd
(m) 1893-1971
Notable Actors and Entertainers (actor)
Harold Urey
(m) 1893-1981
Nobel Prize Winners 1934 (chemistry)
Notable Scientists and Inventors
Harold Macmillan
(m) 1894-1986
British Prime Ministers 1957-1963
Harold Barron
(m) 1894-1978
Olympic Medalists 1920 110 m hurdles (silver)
Harold L. Davis
(m) 1894-1960
Pulitzer Award Winners 1936 Honey in the Horn
Harold Annison
(m) 1895-1957
Olympic Medalists 1920 swimming - 4x200 m freestyle relay (bronze)
Harry "Moose" Watson
(m) 1898-1957
Hall-of-Famers 1962 (ice hockey)
Notable Athletes (ice hockey)
Harry Oliver
(m) 1898-1985
Hall-of-Famers 1967 (ice hockey)
Pie Traynor
(a.k.a. Harold) (m) 1898-1972
Hall-of-Famers 1948 (baseball)
Harold B. Lee
(m) 1899-1973
Other Religious Leaders 1972-1973 The Church of Jesus Christ of Latter-day Saints
Harold Osborn
(m) 1899-1975
Olympic Medalists 1924 decathlon; high jump (gold)
Harold Abrahams
(m) 1899-1978
Olympic Medalists 1924 100 m; 4x100 m relay (gold/silver)
Harold Muller
(m) 1901-1962
Olympic Medalists 1920 high jump (silver)
Charles McCallister
(middle name Harold) (m) 1903-1997
Olympic Medalists 1932 water polo (bronze)
Walter Harold Porter
(m) 1903-1979
Olympic Medalists 1924 3000 m team (silver)
Harold "Red" Grange
(m) 1903-1991
Hall-of-Famers 1963 (football)
Notable Athletes (football)
Harold Whitlock
(m) 1903-1985
Olympic Medalists 1936 50 km walk (gold)
Bruce Bennett
(a.k.a. Harold) (m) 1906-2007
Notable Actors and Entertainers (actor)
Olympic Medalists 1928 shot put (silver)
Harold "Bud" Foster
(m) 1906-1996
Hall-of-Famers 1964 (basketball)
Harold Holt
(m) 1908-1967
Australian Prime Ministers 1966-1967
Harold Courlander
(m) 1908-1996
Notable Writers
Harold Smith
(m) 1909-1958
Olympic Medalists 1932 diving - platform; diving - springboard (gold/silver)
Griffith Jones
(a.k.a. Harold) (m) 1909-2007
Notable Actors and Entertainers (actor)
George Kojac
(middle name Harold) (m) 1910-1996
Olympic Medalists 1928 swimming - 100 m backstroke; swimming - 4x200 m freestyle relay (gold)
Ralph Metcalfe Sr.
(middle name Harold) (m) 1910-1978
Olympic Medalists 1932; 1936 100 m; 200 m; 4x100 m relay (silver/bronze/gold)
Hack Simpson
(a.k.a. Harold) (m) 1910-1978
Olympic Medalists 1932 ice hockey (gold)
Jay Silverheels
(a.k.a. Harold) (m) 1912-1980
Notable Actors and Entertainers (actor)
Harold D. Cagle
(m) 1913-1977
Olympic Medalists 1936 4x400 m relay (silver)
Harold Russell
(m) 1914-2002
Notable Actors and Entertainers (actor)
Oscar Award Winners 1947 The Best Years of Our Lives (actor)
Harold Wilson
(m) 1916-1995
British Prime Ministers 1964-1970; 1974-1976
Harold Robbins
(m) 1916-1997
Notable Writers
Hal Smith
(m) 1916-1994
Notable Actors and Entertainers (actor)
John H. Johnson
(middle name Harold) (m) 1918-2005
Notable Businesspeople
Harold "Pee Wee" Reese
(m) 1918-1999
Hall-of-Famers 1984 (baseball)
Notable Athletes (baseball)
Derek Barton
(middle name Harold) (m) 1918-1998
Nobel Prize Winners 1969 (chemistry)
Howard Keel
(a.k.a. Harold) (m) 1919-2004
Notable Actors and Entertainers (actor)
Hal Newhouser
(m) 1921-1998
Hall-of-Famers 1992 (baseball)
Most Valuable Players 1944; 1945 baseball
Harry "Whipper" Watson
(m) 1923-2002
Hall-of-Famers 1994 (ice hockey)
Arthur Harnden
(middle name Harold) (m) 1924-2016
Olympic Medalists 1948 4x400 m relay (gold)
Hal Holbrook
(m) 1925-2021
Emmy Award Winners 1971 The Bold Ones: The Senator (actor)
Notable Actors and Entertainers (actor)
Tony Award Winners 1966 Mark Twain Tonight! (actor)
Rock Hudson
(middle name Harold) (m) 1925-1985
Notable Actors and Entertainers (actor)
Harry Guardino
(m) 1925-1995
Notable Actors and Entertainers (actor)
Harry Belafonte
(a.k.a. Harold) (m) 1927-2023
Notable Activists and Revolutionaries
Notable Actors and Entertainers (actor)
Notable Musicians
Hal Blaine
(a.k.a. Harold) (m) 1929-2019
Notable Musicians
Doug Harvey
(a.k.a. Harold) (m) 1930-2018
Hall-of-Famers 2010 (baseball)
Harold Pinter
(m) 1930-2008
Nobel Prize Winners 2005 (literature)
Notable Writers
Hal Linden
(a.k.a. Harold) (m) 1931-
Notable Actors and Entertainers (actor)
David Janssen
(middle name Harold) (m) 1931-1980
Notable Actors and Entertainers (actor)
Hal Connolly
(m) 1931-2010
Olympic Medalists 1956 hammer throw (gold)
Harold Bernard St. John
(m) 1931-2004
Other Leaders 1985-1986 Barbados (prime minister)
Hal Greer
(m) 1936-2018
Hall-of-Famers 1981 (basketball)
Notable Athletes (basketball)
Harald V
(a.k.a. Harold) (m) 1937-
Norwegian Kings and Queens 1991-
Ralph Boston
(middle name Harold) (m) 1939-2023
Olympic Medalists 1960; 1964; 1968 long jump (gold/silver/bronze)
Blaine Lindgren
(a.k.a. Harold) (m) 1939-2019
Olympic Medalists 1964 110 m hurdles (silver)
Harold E. Varmus
(m) 1939-
Nobel Prize Winners 1989 (medicine)
Allan Clarke
(a.k.a. Harold) (m) 1942-
Rock and Roll Hall-of-Famers 2010 The Hollies
Thompson Mann
(a.k.a. Harold) (m) 1942-2019
Olympic Medalists 1964 swimming - 4x100 m medley relay (gold)
Gene Clark
(a.k.a. Harold) (m) 1944-1991
Rock and Roll Hall-of-Famers 1991 The Byrds
Harold Ramis
(m) 1944-2014
Notable Actors and Entertainers (actor)
Notable Filmmakers
Harold Shipman
(m) 1946-2004
Notable Evildoers
Brian May
(middle name Harold) (m) 1947-
Notable Musicians
Rock and Roll Hall-of-Famers 2001 Queen
Harold Carmichael
(m) 1949-
Hall-of-Famers 2020 (football)
Stephen Tobolowsky
(middle name Harold) (m) 1951-
Notable Actors and Entertainers (actor)
Harold Hill
(m)
Fictional Characters from Plays and Musicals 1957 The Music Man
Harold Baines
(m) 1959-
Hall-of-Famers 2019 (baseball)
Harold Perrineau
(m) 1963-
Notable Actors and Entertainers (actor)
Kurt Ainsworth
(middle name Harold) (m) 1978-
Olympic Medalists 2000 baseball (gold)
Benh Zeitlin
(middle name Harold) (m) 1982-
Notable Filmmakers
Harold Bishop
(m)
Fictional Characters from Television 1985 Neighbours
Kenneth Vermeer
(middle name Harold) (m) 1986-
Notable Athletes (soccer)
Harold Berman
(m)
Fictional Characters from Television 1996 Hey Arnold!
Bright Abbott
(a.k.a. Harold) (m)
Fictional Characters from Television 2002 Everwood
Harold Abbott
(m)
Fictional Characters from Television 2002 Everwood
Harry Crane
(m)
Fictional Characters from Television 2007 Mad Men
Harold
(m)
Fictional Characters from Song Titles 2010 The Harold Song
Harold Finch
(m)
Fictional Characters from Television 2011 Person of Interest
Harold Fry
(m)
Fictional Characters from Books 2012 The Unlikely Pilgrimage of Harold Fry
Harold
(m)
Hurricanes and Tropical Storms 2023 (storm)