Leo is a given name in several languages. In European languages it is usually a masculine given name and it comes from the Latin word ''wikt:leo#Latin, leo'' which in turns comes from the Greek word wikiwikiweb:Λέων, λέων meaning "lion". It can also refer to the name Leonard (name), Leonard or Leopold (given name), Leopold. In Japanese language, Japanese, Leo or Reo (怜央) is usually a masculine given name. The name can refer to:

People

Religious figures

* Leo of Constantinople (fl. 1134–1143), Patriarch of Constantinople * Leo Rajendram Antony (1927–2012), 4th Roman Catholic Diocese of Trincomalee, Bishop of Trincomalee * Leo Baeck (1873–1956), German rabbi, scholar, and theologian * Leo Zhedenov (1883–1959), member of the Russian apostolate * Leo Baeck (1873–1956), German rabbi, scholar, and theologian * Pope Leo (disambiguation), 13 popes * List of saints named Leo

Rulers

* Emperor Leo (disambiguation), six Byzantine emperors * King Leo (disambiguation), various kings and monarchs with the ruling name Leo * Leo I, Prince of Armenia (died 1140)

Scientists

* Leo Kadanoff (born 1937), American physicist * Leó Szilárd (1898–1964), Jewish Hungarian-American physicist * Reona Leo Esaki (born 1925), Japanese physicist and Nobel laureate

In sports

Association football

* Leo Beenhakker (born 1942), Dutch football manager * Leo Bosschart (1888–1951), Dutch footballer * Leo Fortune-West (born 1971), English footballer *Leo Krupnik (born 1979), Ukrainian-born American-Israeli former soccer player and current soccer coach * Leo Messi (born 1987), Argentine footballer

Other sports

* Leo Baker (skateboarder) (born 1991), American skateboarder * Leo Barry (born 1977), Australian rules footballer * Leo Cantor (1919–1995), American NFL football player *Leo Chenal (born 2000), American football player * Leo Durocher (1905–1991), American baseball player and manager * Leo Klein Gebbink (born 1968), Dutch field hockey player * Leo Koloamatangi (born 1994), American football player * Leo Komarov (born 1987), Finnish ice hockey player * Leo Mazzone (born 1948), pitching coach for the Atlanta Braves and the Baltimore Orioles * Leo Monahan (journalist) (1926–2013), American sports journalist * Leo Nomellini (1924–2000), American football player in both the College and Pro Football Halls of Fame * Leo Peelen (1968–2017), Dutch track cyclist * Leo Visser (born 1966), Dutch ice speed skater * Leo van Vliet (born 1955), Dutch road bicycle racer

Artists and entertainers

* Leo Arnaud (1904–1991), French-American composer * Leo de Berardinis (1940–2008), Italian stage actor and theatre director * Leo de Bever (1930–2015), Dutch architect * Leo G. Carroll (1886–1972), English actor * Leo Chiosso (1920 - 2006), Italian lyricist * Leo F. Forbstein (1892–1948), American film musical director and orchestra conductor * Leo Gorcey (1917–1969), American actor * Leo Howard (born 1997), American actor and martial artist * Leo von König (1871–1944), German painter * Leo Kottke (born 1945), American Finger-style Guitarist * Leo Ku (born 1972), Hong Kong singer and actor * Leo Rosten (1908–1997), American humorist * Leo Saussay (born 1990), Thai actor and singer * Leo Sayer (born 1948), British-born Australian pop musician * Leo Tolstoy (1826–1910), Russian novelist

Politicians

* Leo von Caprivi (1831–1899), German general and Chancellor of Germany * Leo Fernando (1895–1954), Sri Lankan Sinhala businessman, Member of Parliament for Buttala Electoral District * Leo Ryan (1925–1978), California Congressman killed at Jonestown * Leo Varadkar (born 1979), Irish politician and Tánaiste

Other

* Leo of Tripoli (died after 921/2), Greek renegade and admiral for the Abbasid Caliphate * Leo Africanus (c. 1494–c. 1554?), Andalusian Berber Moorish diplomat and author * Leo Burnett (1891–1971), American advertising executive * Leo Fender (1909–1991), American inventor, maker of electric guitars * Leo Frank (1884–1915), American Jew murdered by a lynch mob * Leo Jogiches (1867–1919), Russian Marxist revolutionary * Deaths of Lucia and Leo Krim, Leo Krim (2010–2012), American child killed along with his sister Lucia by their nanny * Leo Laporte (born 1956), American technology broadcaster and author * A. Leo Levin (1919–2015), American law professor * Leo Loudenslager (1944–1997), American world champion aerobatics aviator * Leo Strauss (1899–1973), American political philosopher

Fictional characters

* Dr. Leo Marvin, a character played by Richard Dreyfuss in the 1991 American comedy movie ''What About Bob?#Cast, What About Bob?'' * Leo Beck, a hunter in the video game ''Identity V'' * Leo Corbett (Power Rangers), on the television series ''Power Rangers: Lost Galaxy'' * Leo Demidov, character in “Child 44” * Leo from the manga series, Pandora Hearts * Leo Jones (Doctor Who), on the television series ''Doctor Who'' * Leo Kliesen, a German spelunker in the ''Tekken'' series * Leo Kovalensky, from the novel ''We the Living'' by Ayn Rand * Leo McGarry, on the television series ''The West Wing'' * Leo Fitz, on the television series ''Agents of S.H.I.E.L.D.'', played by Iain De Caestecker * Leo Ross, a character in the 1989 American action comedy movie ''Speed Zone#Cast, Speed Zone'' * Leo, a nickname for Leonardo (Teenage Mutant Ninja Turtles), Leonardo from Teenage Mutant Ninja Turtles * List of recurring Futurama characters#Leo and Inez Wong, Leo Wong, the father of Amy Wong on the television series ''Futurama'' * Leo Valdez, a son of Hephaestus from Rick Riordan's ''The Heroes of Olympus'' fantasy novel series * Leo Wyatt, on the television series ''Charmed'' * Uncle Leo, on the television series ''Seinfeld'' * Leo (That '70s Show), on the television series ''That '70s Show'', played by Tommy Chong * Leo (comics), in the Marvel universe * Leo (Yu-Gi-Oh! 5D's), in the manga series ''Yu-Gi-Oh!'' * A character in the video game series ''List of Tekken characters#Introduced in Tekken 6 and Tekken 6: Bloodline Rebellion, Tekken'' * A character in the opera ''Leo, the Royal Cadet'' * A character in the video game ''Characters of Final Fantasy VI#Leo, Final Fantasy VI'' * A character in Red Earth (video game)#Player characters, ''Red Earth'' (video game) (aka ''Warzard'') * Leo, in the American animated series ''Little Einsteins'' * A character in the anime and manga series ''Fairy Tail'', who also goes by the name of "Loke" * A character in the video game ''Fire Emblem Fates'' * List of Doubutsu Sentai Zyuohger characters#Leo, Leo, a character in the Doubutsu Sentai Zyuohger * Leo Lieberman, daughter of David "Micro" Lieberman and Sarah Lieberman in ''The Punisher (TV series), The Punisher'', portrayed by Ripley Sobo