June 23 is the 174th day of the year (175th in leap years) in the Gregorian calendar. There are 191 days remaining until the end of the year.
1901 – 2000
- 1913 – Second Balkan War: The Greeks defeat the Bulgarians in the Battle of Doiran.
- 1914 – Mexican Revolution: Pancho Villa takes Zacatecas from Victoriano Huerta
- 1915 – First wholesale slaughter of Armenian men in Harput (Kharpert), Turkey.
- 1919 – Estonian War of Independence: Decisive defeat of the "Baltische Landswehr" in the Battle of Cesis.
- 1924 – German serial killer Fritz Haarmann is captured.
- 1925 – Mount Logan, Canada's highest peak at 5959 metres above sea level, in the Yukon, is climbed for the first time, by a team of 6 climbers, led by Albert MacCarthy.
- 1931 – Wiley Post and Harold Gatty take off from Roosevelt Field, Long Island in an attempt to accomplish the first round-the-world flight in a single-engine plane. Archived 2012-10-08 at the Wayback Machine
- 1938 – The Civil Aeronautics Act is signed into law, forming the Civil Aeronautics Authority in the United States.
- 1938 – Marineland opens near St. Augustine, Florida.
- 1940 – World War II: German leader Adolf Hitler surveys newly defeated Paris in now-occupied France.
- 1941 – Lithuanian Activist Front declares independence (June independence) of Lithuania from Soviet Union; it was only brief however as Nazis occupied Lithuania a few weeks later.
- 1942 – Holocaust: The first selections for the gas chamber at Auschwitz take place, on a train full of Jews from Paris.
- 1943 – World War II: British destroyers HMS Eclipse and HMS Laforey sink the Italian submarine Asciangihi in the Mediterranean Sea, after she torpedoes the cruiser HMS Newfoundland.
- 1944 – Thomas Mann becomes a US citizen.
- 1946 – An earthquake strikes Vancouver Island.
- 1947 – The United States Senate follows the United States House of Representatives in overriding U.S. President Harry S. Truman's veto of the Taft-Hartley Act.
- 1956 – Gamal Abdel Nasser elected president of Egypt.
- 1958 – The Dutch Reformed Church accepts women ministers.
- 1959 – Convicted Manhattan Project spy Klaus Fuchs is released after only nine years in prison and allowed to emigrate to Dresden, East Germany (where he resumed a scientific career).
- 1959 – A fire in a resort hotel in Stalheim, Norway kills 34 people.
- 1960 – Japan signs security treaty with the U.S.
- 1961 – Having been signed on December 1, 1959, the Antarctic Treaty goes into effect.
- 1967 – Cold War: U.S. President Lyndon B. Johnson meets with Soviet Premier Aleksei Kosygin in Glassboro, New Jersey for the three-day Glassboro Summit Conference.
- 1968 – 74 are killed and 150 injured in a soccer stampede towards a closed exit in a Buenos Aires stadium.
- 1969 – Warren E. Burger is sworn in as chief justice of the United States Supreme Court by retiring chief Earl Warren.
- 1972 – Watergate Scandal: U.S. President Richard M. Nixon and White House chief of staff H. R. Haldeman are taped talking about using the Central Intelligence Agency to obstruct the Federal Bureau of Investigation's investigation into the Watergate break-ins.
- 1974 – In Switzerland, the Canton of Jura separates from the Canton of Bern.
- 1979 – Sydney: New South Wales Premier Neville Wran officially opens the Eastern Suburbs Railway. It operates as a shuttle between Central & Bondi Junction until full integration with the Illawarra Line during 1980.
- 1983 – Pope John Paul II meets imprisoned Solidarity leader Lech Walesa in Poland.
- 1985 – A Boeing 747 carrying Air India Flight 182 blew up at 31,000 feet (9500 m) above the Atlantic Ocean, South of Ireland, killing all 329 aboard.
- 1989 – The movie Batman is released in the United States.
- 1990 – Moldova declares independence.
- 1992 – Mafia boss John Gotti is sentenced to life in prison after being found guilty of conspiracy to commit murder and racketeering on April 2.
- 1992 – Yitzhak Rabin wins the Israeli parliamentary elections.
- 2000 – A ferry sinks on the Yangtze river, near Luzhou, in China's Sichuan province, killing 131 people.
Up to 1900
- 47 BC – Ptolemy Caesarion of Egypt (d. 30 BC)
- 1373 – Queen Joan II of Naples (d. 1435)
- 1435 – Francis II, Duke of Brittany (d. 1488)
- 1456 – Margaret of Denmark, Queen Consort of Scotland (d. 1486)
- 1534 – Oda Nobunaga, Japanese warlord (d. 1582)
- 1612 – André Tacquet, Flemish mathematician (d. 1660)
- 1668 – Giambattista Vico, Italian philosopher and historian (d. 1744)
- 1703 – Marie Leszczynska, Queen Consort of France (d. 1768)
- 1711 – Giovanni Battista Guadagnini, Italian instrument maker (d. 1786)
- 1763 – Joséphine de Beauharnais, Empress of France (d. 1814)
- 1772 – Cristobal Mendoza, 1st President of Venezuela (d. 1829)
- 1800 – Karol Marcinkowski, Polish physician and social activist (d. 1846)
- 1815 – Robert Milligan McLane, American politician and diplomat (d. 1898)
- 1824 – Carl Reinecke, German musician and composer (d. 1910)
- 1863 – Sándor Bródy, Hungarian author and journalist (d. 1924)
- 1875 – Carl Milles, Swedish sculptor (d. 1955)
- 1875 – Norman Pritchard, Indian athlete (d. 1929)
- 1884 – Cyclone Taylor, Canadian ice hockey player (d. 1979)
- 1887 – Ernst Rowohlt, German publisher (d. 1960)
- 1888 – Bronson M. Cutting, American politician (d. 1935)
- 1888 – Lee Moran, American actor (d. 1961)
- 1889 – Anna Akhmatova, Russian poet (d. 1966)
- 1894 – King Edward VIII of the United Kingdom (d. 1972)
- 1894 – Alfred Kinsey, American entomologist and sexologist (d. 1956)
- 1897 – Alexandru Giugaru, Romanian actor (d. 1986)
1901 – 1950
- 1906 – King Tribhuvan of Nepal (d. 1955)
- 1907 – James Meade, English economist (d. 1995)
- 1909 – Georges Rouquier, French actor, movie director and screenwriter (d. 1989)
- 1910 – Milt Hinton, American jazz musician (d. 1990)
- 1910 – Jean Anouilh, French dramatist (d. 1987)
- 1910 – Gordon B. Hinckley, American Mormon leader (d. 2008)
- 1912 – Alan Turing, British mathematician (d. 1954)
- 1913 – William P. Rogers, American politician (d. 2001)
- 1916 – Ernst Willimowski, Polish footballer (d. 1987)
- 1919 – Hermann Gmeiner, founder of SOS Children's Villages (d. 1986)
- 1919 – Mohamed Boudiaf, Algerian political leader (d. 1992)
- 1923 – Johnny Barnes, Bermudian entertainer (d. 2016)
- 1923 – Giuseppina Tuissi, Italian Resistance activist (d. 1945)
- 1923 – Walter Wolfgang, German-British socialist and peace activist (d. 2019)
- 1925 – John Shepherd-Barron, Scottish inventor (d. 2010)
- 1925 – Art Modell, American businessman (d. 2012)
- 1925 – Oliver Smithies, British-American geneticist (d. 2017)
- 1926 – Arnaldo Pomodoro, Italian sculptor
- 1927 – Bob Fosse, American choreographer (d. 1987)
- 1928 – Klaus von Dohnanyi, former Mayor of Hamburg
- 1929 – June Carter Cash, American singer (d. 2003)
- 1930 – Donn F. Eisele, American colonel, pilot and astronaut (d. 1987)
- 1931 – Ola Ullsten, former Prime Minister of Sweden (d. 2018)
- 1931 – Gunnar Uusi, Estonian chess player (d. 1981)
- 1935 – Maurice Ferré, 32nd Mayor of Miami, Florida
- 1936 – Richard Bach, American writer and pilot
- 1936 – Jan Hoet, Belgian art historian (d. 2014)
- 1936 – Costas Simitis, former Prime Minister of Greece
- 1937 – Martti Ahtisaari, former President of Finland
- 1940 – Stuart Sutcliffe, British musician (d. 1962)
- 1940 – Wilma Rudolph, American runner (d. 1994)
- 1940 – Adam Faith, English singer and actor (d. 2003)
- 1940 – Derry Irvine, Scottish lawyer, judge and politician
- 1940 – Willie Wallace, Scottish footballer
- 1942 – Martin Rees, English cosmologist and astrophysicist
- 1943 – Albert Pintat, former Prime Minister of Andorra
- 1943 – James Levine, American conductor
- 1943 – Vint Cerf, American computer scientist and author
- 1945 – John Garang, South Sudanese politician (d. 2005)
- 1948 – Clarence Thomas, American jurist
- 1948 – Nabarun Bhattacharya, Indian author (d. 2015)
- 1950 – Orani Joao Tempesta, Brazilian cardinal
1951 – 1975
- 1951 – Michèle Mouton, French rally driver
- 1951 – Sergei Skripal, Russian double-agent
- 1953 – Armen Sarkissian, former Prime Minister and current President of Armenia
- 1955 – Maggie Philbin, English television and radio presenter
- 1955 – Jean Tigana, French footballer
- 1956 – Randy Jackson, American music producer
- 1957 – Frances McDormand, American actress
- 1957 – Jochen Schweizer, German entrepreneur
- 1960 – Tatsuya Uemura, Japanese musician and programmer
- 1960 – Donald Harrison, American saxophonist, composer and producer
- 1960 – Fadil Vokrri, Kosovar footballer (d. 2018)
- 1961 – Andrea Borella, Italian fencer
- 1961 – John Nicolson, Scottish politician
- 1963 – Colin Montgomery, Scottish golfer
- 1964 – Joss Whedon, American television director and movie director
- 1964 – Kenji Honnami, Japanese footballer
- 1965 – Paul Arthurs, British guitarist (Oasis)
- 1969 – Fernanda Ribeiro, Portuguese athlete
- 1970 – Yann Tiersen, French musician and songwriter
- 1972 – Zinedine Zidane, French footballer
- 1972 – Go Oiwa, Japanese footballer
- 1972 – Selma Blair, American actress
- 1973 – Marie N, Latvian singer
- 1973 – Eisuke Nakanishi, Japanese footballer
- 1975 – KT Tunstall, Scottish singer
- 1975 – Shuhei Terada, Japanese footballer
From 1976
- 1976 – Patrick Vieira, French footballer
- 1976 – Emmanuelle Vaugier, Canadian actress, singer, songwriter and model
- 1977 – Hayden Foxe, Australian footballer
- 1977 – Miguel Angel Angulo, Spanish footballer
- 1977 – Jason Mraz, American singer
- 1978 – Memphis Bleek, American rapper
- 1978 – Frédéric Leclercq, French singer-songwriter and musician
- 1980 – Francesca Schiavone, Italian tennis player
- 1980 – Melissa Rauch, American actress
- 1981 – Antony Costa, British singer (Blue)
- 1982 – Derek Boogaard, Canadian ice hockey player (d. 2011)
- 1983 – José Manuel Rojas, Chilean footballer
- 1984 – Takeshi Matsuda, Japanese swimmer
- 1984 – Duffy, Welsh singer
- 1987 – Alessia Filippi, Italian swimmer
- 1988 – Chellsie Memmel, American gymnast
- 1989 – Jordan Nolan, Canadian ice hockey player
- 1989 – Ayana Taketatsu, Japanese voice actress
- 1989 – Lauren Bennett, British dancer, singer and model
- 1989 – Billie Kay, American professional wrestler
- 1991 – Katie Armiger, American singer
- 1992 – Luiza Galiulina, Uzbek gymnast
- 1995 – Hao Yun, Chinese swimmer
- 1995 – Danna Paola, Mexican singer and actress
- 2004 – Mana Ashida, Japanese actress and singer
Up to 2000
- 79 – Vespasian, Roman Emperor (b. 9)
- 679 – Aethelthryth, Queen of Northumbria
- 1018 – Henry I, Margrave of Austria
- 1222 – Constance of Aragon, Holy Roman Empress (b. 1179)
- 1516 – Ferdinand II of Aragon (b. 1452)
- 1555 – Pedro Mascarenhas, Portuguese explorer (b. 1470)
- 1565 – Dragut, Ottoman general (b. 1485)
- 1582 – Shimizu Muneharu, Japanese military leader (b. 1537)
- 1615 – Mashita Nagamori, Japanese warlord (b. 1545)
- 1677 – William Louis, Duke of Württemberg (b. 1647)
- 1686 – William Coventry, English statesman (b. 1628)
- 1691 – Suleiman II, Ottoman Sultan (b. 1642)
- 1707 – John Mill, English theologian (b. 1645)
- 1779 – Mikael Sehul, Ethiopian warlord (b. 1691)
- 1806 – Mathurin Jacques Brisson, French zoologist and philosopher (b. 1723)
- 1832 – James Hall, Scottish geologist (b. 1761)
- 1836 – James Mill, Scottish philosopher and historian (b. 1773)
- 1856 – Ivan Kireevsky, Russian literary critic and philosopher (b. 1806)
- 1881 – Matthias Jakob Scheiden, German botanist (b. 1804)
- 1891 – Wilhelm Eduard Weber, German physicist (b. 1804)
- 1893 – William Fox, four-times Prime Minister of New Zealand (b. 1812)
- 1893 – Theophilus Shepstone, British-South African politician (b. 1817)
- 1914 – Bhaktivinoda Thakur, Indian philosopher and spiritual reformist (b. 1838)
- 1926 – Jon Magnusson, Prime Minister of Iceland (b. 1859)
- 1945 – Giuseppina Tuissi, Italian Resistance activist (b. 1923)
- 1959 – Boris Vian, French polymath (b. 1920)
- 1970 – Roscoe Turner, American aviator (b. 1895)
- 1980 – Varahagiri Venkata Giri, 4th President of India (b. 1894)
- 1980 – Sanjay Gandhi, son of Indira Gandhi (b. 1946)
- 1981 – Zarah Leander, Swedish actress and singer (b. 1907)
- 1986 – Moses I. Finley, British historian (b. 1912)
- 1991 – Lea Padovani, Italian movie actress (b. 1920)
- 1995 – Anatoly Tarasov, Russian ice hockey coach (b. 1918)
- 1995 – Jonas Salk, American biologist and physician (b. 1914)
- 1996 – Andreas Papandreou, former Prime Minister of Greece (b. 1919)
- 1997 – Betty Shabazz, American activist (b. 1934)
- 1998 – Maureen O'Sullivan, Irish actress (b. 1911)
- 1999 – Buster Merryfield, English actor (b. 1920)
- 2000 – Peter Dubovsky, Slovakian footballer (b. 1972)
From 2001
- 2001 – Yvonne Dionne, one of the Dionne Quintuplets (b. 1934)
- 2001 – Corinne Calvet, French actress (b. 1925)
- 2006 – Aaron Spelling, American TV producer (b. 1923)
- 2006 – Harriet, Galapagos Tortoise (b. 1830)
- 2008 – Arthur Chung, former President of Guyana (b. 1918)
- 2009 – Hanne Hiob, German actress (b. 1923)
- 2009 – Ed McMahon, American television personality (b. 1923)
- 2010 – Mohammed Mzali, Prime Minister of Tunisia (b. 1925)
- 2011 – Gene Colan, American comic book artist (b. 1926)
- 2011 – Dennis Marshall, Costa Rican footballer (b. 1985)
- 2011 – Peter Falk, American actor (b. 1927)
- 2012 – Alan McDonald, Northern Irish footballer (b. 1963)
- 2012 – Brigitte Engerer, French pianist (b. 1952)
- 2013 – Bobby Bland, American singer-songwriter (b. 1930)
- 2013 – Richard Matheson, American author (b. 1926)
- 2014 – Steve Viksten, American television writer and voice actor (b. 1960)
- 2015 – Chris Woodhead, English educationist (b. 1946)
- 2015 – Helmuth Lohner, Austrian actor and theatre director (b. 1933)
- 2015 – Dick Van Patten, American actor (b. 1928)
- 2015 – Harvey Pollack, American sport statistician (b. 1922)
- 2015 – Thé Lau, Dutch singer and guitarist (b. 1952)
- 2015 – Magali Noël, French actress and singer (b. 1931)
- 2016 – James Green, American historian (b. 1944)
- 2016 – Stanley Mandelstam, American theoretical physicist (b. 1928)
- 2016 – Ralph Stanley, American musician (b. 1927)
- 2017 – Saman Kelegama, Sri Lankan economist (b. 1959)
- 2017 – Tonny van der Linden, Dutch footballer (b. 1932)
- 2017 – Mr. Pogo, Japanese professional wrestler (b. 1951)
- 2017 – Gabe Pressman, American journalist (b. 1924)
- 2017 – Betty Metcalf, American politician (b. 1921)
- 2018 – Alberto Fouilloux, Chilean footballer (b. 1940)
- 2018 – Donald Hall, American poet (b. 1928)
- 2018 – Kim Jong-pil, Prime minister of South Korea (b. 1926)
- 2018 – Violeta Rivas, Argentine singer and actress (b. 1937)
- 2019 – Peter Ball, English bishop and convicted sex offender (b. 1932)
- 2019 – Dave Bartholomew, American musician, bandleader and songwriter (b. 1918)
- 2019 – Andrey Kharitonov, Russian actor (b. 1959)
- 2019 – Fernando Roldán, Chilean footballer (b. 1920)
- 2019 – George Rosenkranz, Hungarian-Mexican chemist (b. 1916)
- 2019 – Abdul Sattar, Pakistani political scientist and diplomat (b. 1931)