Namesakes
Leonard Cohen
(m) 1934-2016 
Notable Musicians
Rock and Roll Hall-of-Famers 2008
Nicolas Léonard Sadi Carnot
(m) 1796-1832
Notable Scientists and Inventors
James Callaghan
(a.k.a. Leonard) (m) 1912-2005
British Prime Ministers 1976-1979
Leonard Nimoy
(m) 1931-2015
Notable Actors and Entertainers (actor)
Arthur Leonard Schawlow
(m) 1921-1999
Nobel Prize Winners 1981 (physics)
Notable Scientists and Inventors
Leonard Bernstein
(m) 1918-1990
Notable Musicians
Joseph Gordon-Levitt
(middle name Leonard) (m) 1981-
Notable Actors and Entertainers (actor)
Timothy Dalton
(middle name Leonard) (m) 1946-
Notable Actors and Entertainers (actor)
Lenny Kravitz
(m) 1964-
Notable Musicians
Ed O'Neill
(middle name Leonard) (m) 1946-
Notable Actors and Entertainers (actor)
Gregg L. Semenza
(middle name Leonard) (m) 1956-
Nobel Prize Winners 2019 (medicine)
Eckhart Tolle
(middle name Leonard) (m) 1948-
Notable Writers
Timothy Spall
(middle name Leonard) (m) 1957-
Notable Actors and Entertainers (actor)
Leo Tindemans
(m) 1922-2014
Belgian Prime Ministers 1974-1978
Jack L. Warner
(middle name Leonard) (m) 1892-1978
Notable Businesspeople
Buddy Hackett
(a.k.a. Leonard) (m) 1924-2003
Notable Actors and Entertainers (actor)
Hjalmar Hammarskjöld
(middle name Leonard) (m) 1862-1953
Swedish Prime Ministers 1914-1917
Lenny Wilkens
(m) 1937-
Hall-of-Famers 1989; 1998 (basketball)
Notable Athletes (basketball)
Big Sean
(middle name Leonard) (m) 1988-
Notable Musicians
Lenny Bruce
(m) 1925-1966
Notable Actors and Entertainers (comedian)
Leonard of Noblac
(m) ?-559
Saints
Leonard "Bones" McCoy
(m)
Fictional Characters from Television 1966 Star Trek
Barry Corbin
(a.k.a. Leonard) (m) 1940-
Notable Actors and Entertainers (actor)
Georges Theunis
(middle name Léonard) (m) 1873-1966
Belgian Prime Ministers 1921-1925; 1934-1935
Lenny Abrahamson
(m) 1966-
Notable Filmmakers
Leonard Hofstadter
(m)
Fictional Characters from Television 2007 The Big Bang Theory
Len Cariou
(m) 1939-
Notable Actors and Entertainers (actor)
Leonard Frey
(m) 1938-1988
Notable Actors and Entertainers (actor)
Leonard "Red" Kelly
(m) 1927-2019
Hall-of-Famers 1969 (ice hockey)
Notable Athletes (ice hockey)
Justinus van der Brugghen
(middle name Leonard) (m) 1804-1863
Dutch Prime Ministers 1856-1858
Léon Faucher
(m) 1803-1854
French Presidents and Prime Ministers 1851 (prime minister)
Lennie Niehaus
(m) 1929-2020
Notable Musicians
Jimmy Tremeer
(a.k.a. Leonard) (m) 1874-1951
Olympic Medalists 1908 400 m hurdles (bronze)
Leo Canjels
(m) 1933-2010
Notable Athletes (soccer)
Leon Gregory
(m) 1932-
Olympic Medalists 1956 4x400 m relay (silver)
Gareth Hunt
(middle name Leonard) (m) 1942-2007
Notable Actors and Entertainers (actor)
Len Dawson
(m) 1935-2022
Hall-of-Famers 1987 (football)
Notable Athletes (football)
Canada Lee
(a.k.a. Leonard) (m) 1907-1952
Notable Actors and Entertainers (actor)
Adrian Lukis
(middle name Leonard) (m) 1957-
Notable Actors and Entertainers (actor)
Jonathan Cain
(middle name Leonard) (m) 1950-
Rock and Roll Hall-of-Famers 2017 Journey
Jairo Patiño
(middle name Leonard) (m) 1978-
Notable Athletes (soccer)
Lenny Davidson
(m) 1944-
Rock and Roll Hall-of-Famers 2008 The Dave Clark Five
Len Ford
(m) 1926-1972
Hall-of-Famers 1976 (football)
Lenny Moore
(m) 1933-
Hall-of-Famers 1975 (football)
Lennie Briscoe
(a.k.a. Leonard) (m)
Fictional Characters from Television 1990 Law & Order
Stan Smith
(middle name Leonard) (m)
Fictional Characters from Television 2005 American Dad!
Leo Chingkwake
(m)
Fictional Characters from Television 1998 That '70s Show
Leonard Waggedorn
(m)
Fictional Characters from Television 1968 Julia
Leonard
(m)
Fictional Characters from Song Titles 1980 Leonard
Leonard Peacock
(m)
Fictional Characters from Books 2013 Forgive Me, Leonard Peacock
Leonard of Vandoeuvre
(m) ?-570
Saints
Leonard
(m)
Fictional Characters from Song Titles 2012 Leonard
Leonard Kimura
(m) ?-1619
Saints
Leonardo of Porto Maurizio
(a.k.a. Leonard) (m) 1676-1751
Saints
Leonardus van Veghel
(a.k.a. Leonard) (m) ?-1572
Saints