September 23

Pre-1600

 * 38 – Drusilla, Caligula's sister who died in June, with whom the emperor is said to have an incestuous relationship, is deified.
 * 1122 – Pope Callixtus II and Holy Roman Emperor Henry V agree to the Concordat of Worms to put an end to the Investiture Controversy.
 * 1338 – The Battle of Arnemuiden, in which a French force defeats the English, is the first naval battle of the Hundred Years' War and the first naval battle in which gunpowder artillery is used.
 * 1409 – The Battle of Kherlen is the second significant victory over Ming dynasty China by the Mongols since 1368.
 * 1459 – The Battle of Blore Heath, the first major battle of the English Wars of the Roses, is won by the Yorkists.
 * 1561 – King Philip II of Spain issues cedula, ordering a halt to colonizing efforts in Florida.

1601–1900

 * 1779 – American Revolution: John Paul Jones, naval commander of the United States, on board the USS Bonhomme Richard (1765), wins the Battle of Flamborough Head.
 * 1803 – Second Anglo-Maratha War: The Battle of Assaye is fought between the British East India Company and the Maratha Empire in India.
 * 1821 – Tripolitsa, Greece, is captured by Greek rebels during the Greek War of Independence.
 * 1846 – Astronomers Urbain Le Verrier, John Couch Adams and Johann Gottfried Galle collaborate on the discovery of Neptune.
 * 1868 – The Grito de Lares occurs in Puerto Rico against Spanish rule.
 * 1879 – The Macedo-Romanian Cultural Society is founded.
 * 1884 – On the night of 23-24 September, the steamship Arctique runs aground near Cape Virgenes leading to the discovery of nearby placer gold, beginning the Tierra del Fuego gold rush.
 * 1899 – The American Asiatic Squadron destroys a Filipino battery at the Battle of Olongapo.

1901–present

 * 1905 – Norway and Sweden sign the Karlstad Treaty, peacefully dissolving the Union between the two countries.
 * 1913 – The United Mine Workers of America launch a strike which eventually escalated into the Colorado Coalfield War.
 * 1942 – World War II: The Matanikau action on Guadalcanal begins: U.S. Marines attack Japanese units along the Matanikau River.
 * 1950 – Korean War: The Battle of Hill 282 is the first US friendly-fire incident on British military personnel since World War II.
 * 1973 – Argentine general election: Juan Perón returns to power in Argentina.
 * 1983 – Gulf Air Flight 771 is destroyed by a bomb, killing all 117 people on board.
 * 2004 – Over 3,000 people die in Haiti after Hurricane Jeanne produces massive flooding and mudslides.
 * 2008 – Matti Saari kills ten people at a school in Finland before committing suicide.

Pre-1600

 * 63 BC – Augustus, Roman emperor (d. 14 AD)
 * 1158 – Geoffrey II, Duke of Brittany (d. 1186)
 * 1215 – Kublai Khan, Mongolian emperor (d. 1294)
 * 1495 – Bagrat III of Imereti, King of Imereti (d. 1565)
 * 1597 – Francesco Barberini, Catholic cardinal (d. 1679)
 * 1598 – Eleonore Gonzaga, Italian wife of Ferdinand II, Holy Roman Emperor (d. 1655)

1601–1900

 * 1642 – Giovanni Maria Bononcini, Italian violinist and composer (d. 1678)
 * 1647 – Joseph Dudley, English politician, Governor of the Province of Massachusetts Bay (d. 1720)
 * 1650 – Jeremy Collier, English bishop and theologian (d. 1726)
 * 1713 – Ferdinand VI of Spain (d. 1759)
 * 1740 – Empress Go-Sakuramachi of Japan (d. 1813)
 * 1756 – John Loudon McAdam, Scottish engineer (d. 1836)
 * 1771 – Emperor Kōkaku of Japan (d. 1840)
 * 1778 – Mariano Moreno, Argentinian journalist, lawyer, and politician (d. 1811)
 * 1781 – Princess Juliane of Saxe-Coburg-Saalfeld (d. 1860)
 * 1791 – Johann Franz Encke, German astronomer and academic (d. 1865)
 * 1791  – Theodor Körner, German soldier and author (d. 1813)
 * 1800 – William Holmes McGuffey, American author and academic (d. 1873)
 * 1819 – Hippolyte Fizeau, French physicist and academic (d. 1896)
 * 1823 – John Colton, English-Australian politician, 13th Premier of South Australia (d. 1902)
 * 1838 – Victoria Woodhull, American journalist and activist (d. 1927)
 * 1851 – Ellen Hayes, American mathematician and astronomer (d. 1930)
 * 1852 – James Carroll Beckwith, American painter and academic (d. 1917)
 * 1852  – William Stewart Halsted, American physician and surgeon (d. 1922)
 * 1853 – Princess Marie Elisabeth of Saxe-Meiningen (d. 1923)
 * 1861 – Robert Bosch, German engineer and businessman, founded Robert Bosch GmbH (d. 1942)
 * 1863 – Mary Church Terrell, American author and activist (d. 1954)
 * 1865 – Pekka Halonen, Finnish painter (d. 1933)
 * 1865  – Emma Orczy, Hungarian-English author and playwright (d. 1947)
 * 1865  – Suzanne Valadon, French model and painter (d. 1938)
 * 1867 – John Lomax, American teacher, musicologist, and folklorist (d. 1948)
 * 1869 – Mary Mallon, American cook and typhoid carrier (d. 1938)
 * 1876 – Moshe Zvi Segal, Israeli rabbi and scholar (d. 1968)
 * 1880 – John Boyd Orr, 1st Baron Boyd-Orr, Scottish biologist, physician, and politician, Nobel Prize laureate (d. 1971)
 * 1889 – Walter Lippmann, American journalist and publisher, co-founded The New Republic (d. 1974)
 * 1890 – Friedrich Paulus, German general (d. 1957)
 * 1895 – Miron Merzhanov, Russian architect and engineer (d. 1975)
 * 1895  – Johnny Mokan, American baseball player (d. 1985)
 * 1897 – Paul Delvaux, Belgian painter (d. 1994)
 * 1897  – Walter Pidgeon, Canadian-American actor and singer (d. 1984)
 * 1898 – Les Haylen, Australian journalist and politician (d. 1977)
 * 1899 – Tom C. Clark, American lawyer and judge, 59th Attorney General of the United States (d. 1977)
 * 1899  – Louise Nevelson, American sculptor (d. 1988)
 * 1900 – Bill Stone, English soldier (d. 2009)

1901–present

 * 1901 – Jaroslav Seifert, Czech poet and journalist, Nobel Prize laureate (d. 1986)
 * 1902 – Su Buqing, Chinese mathematician and academic (d. 2003)
 * 1903 – Cec Fifield, Australian rugby league player and coach (d. 1957)
 * 1904 – Arthur Folwell, English-Australian rugby league player, coach, and administrator (d. 1966)
 * 1906 – Charles Ritchie, Canadian diplomat, High Commission of Canada in the United Kingdom (d. 1995)
 * 1907 – Tiny Bradshaw, American singer-songwriter and pianist (d. 1958)
 * 1907  – Anne Desclos, French journalist and author (d. 1998)
 * 1907  – Duarte Nuno, Duke of Braganza (d. 1976)
 * 1908 – Ramdhari Singh Dinkar, Indian poet, academic, and politician (d. 1974)
 * 1909 – Lorenc Antoni, Kosovo-Albanian composer and conductor (d. 1991)
 * 1910 – Jakob Streit, Swiss anthroposophist and author (d. 2009)
 * 1911 – Frank Moss, American lawyer and politician (d. 2003)
 * 1912 – Ghulam Mustafa Khan, Pakistani linguist, author, and critic (d. 2005)
 * 1912  – Tony Smith, American sculptor and educator (d. 1980)
 * 1913 – Carl-Henning Pedersen, Danish painter and sculptor (d. 2007)
 * 1915 – Julius Baker, American flute player and educator (d. 2003)
 * 1915  – Clifford Shull, American physicist and academic, Nobel Prize laureate (d. 2001)
 * 1916 – Aldo Moro, Italian academic and politician, 39th Prime Minister of Italy (d. 1978)
 * 1917 – El Santo, Mexican Luchador enmascarado, film actor, and folk icon (d. 1984)
 * 1917  – Asima Chatterjee, Indian chemist (d. 2006)
 * 1920 – Mickey Rooney, American actor, singer, director, and producer (d. 2014)
 * 1923 – Mohamed Hassanein Heikal, Egyptian journalist (d. 2016)
 * 1923  – Vello Helk, Estonian-Danish historian and author (d. 2014)
 * 1924 – Pedro Joaquín Chamorro Cardenal, Nicaraguan journalist and publisher (d. 1978)
 * 1925 – Denis C. Twitchett, English historian and scholar (d. 2006)
 * 1926 – André Cassagnes, French toy maker, created the Etch A Sketch (d. 2013)
 * 1926  – John Coltrane, American saxophonist and composer (d. 1967)
 * 1928 – Frank Foster, American saxophonist and composer (d. 2011)
 * 1928  – Roger Grimsby, American journalist and actor (d. 1995)
 * 1930 – Sehba Akhtar, Pakistani poet and songwriter (d. 1996)
 * 1930  – Colin Blakely, Northern Irish actor (d. 1987)
 * 1930  – Ray Charles, American singer-songwriter, pianist, and actor (d. 2004)
 * 1931 – Hilly Kristal, American businessman, founded CBGB (d. 2007)
 * 1931  – Stan Lynde, American author and illustrator (d. 2013)
 * 1931  – Gerald Merrithew, Canadian educator and politician (d. 2004)
 * 1932 – Georg Keßler, German footballer and manager
 * 1933 – Lloyd J. Old, American immunologist and academic (d. 2011)
 * 1934 – Per Olov Enquist, Swedish journalist, author, and playwright (d. 2020)
 * 1935 – Prem Chopra, Pakistani-Indian actor
 * 1935  – Les McCann, American soul-jazz singer and pianist (d. 2023)
 * 1935  – Ron Tindall, English-Australian footballer, cricketer, and manager (d. 2012)
 * 1936 – George Eastham, English footballer
 * 1936  – Valentín Paniagua, Peruvian lawyer and politician, 91st President of Peru (d. 2006)
 * 1936  – Sylvain Saudan, Swiss skier
 * 1936  – Tareq Suheimat, Jordanian physician, general, and politician (d. 2014)
 * 1937 – Jacques Poulin, Canadian author and translator
 * 1938 – Romy Schneider, German-French actress (d. 1982)
 * 1939 – Henry Blofeld, English cricketer and journalist
 * 1939  – Roy Buchanan, American singer-songwriter and guitarist (d. 1988)
 * 1939  – Joan Hanham, Baroness Hanham, English politician
 * 1939  – Sonny Vaccaro, American businessman
 * 1940 – Michel Temer, Brazilian lawyer and politician, 25th Vice President of Brazil
 * 1940  – Dick Thornett, Australian rugby player and water polo player (d. 2011)
 * 1941 – George Jackson, American activist and author, co-founded the Black Guerrilla Family (d. 1971)
 * 1941  – Simon Nolet, Canadian ice hockey player and coach
 * 1941  – Norma Winstone, English singer-songwriter
 * 1942 – Sila María Calderón, Puerto Rican-American businesswoman and politician, 12th Secretary of State of Puerto Rico
 * 1942  – Colin Low, Baron Low of Dalston, Scottish scholar and politician
 * 1942  – David Renneberg, Australian cricketer
 * 1943 – Julio Iglesias, Spanish singer-songwriter
 * 1943  – Marty Schottenheimer, American football player and coach (d. 2021)
 * 1944 – Eric Bogle, Scottish-Australian singer-songwriter and guitarist
 * 1945 – Igor Ivanov, Russian politician and diplomat, Russian Minister of Foreign Affairs
 * 1945  – Alan Old, English rugby player
 * 1945  – Paul Petersen, American actor, singer, author, and activist
 * 1946 – Franz Fischler, Austrian politician
 * 1946  – Bernard Maris, French economist and journalist (d. 2015)
 * 1946  – Genista McIntosh, Baroness McIntosh, English politician
 * 1946  – Davorin Popović, Bosnian singer-songwriter (d. 2001)
 * 1946  – Anne Wheeler, Canadian director, producer, and screenwriter
 * 1947 – Christian Bordeleau, Canadian ice hockey player
 * 1947  – Mary Kay Place, American actress
 * 1947  – Neal Smith, American drummer and songwriter
 * 1948 – Dan Toler, American guitarist (d. 2013)
 * 1949 – Floella Benjamin, Trinidadian-English actress, academic, and politician
 * 1949  – Bruce Springsteen, American singer-songwriter and guitarist
 * 1949  – Kostas Tournas, Greek singer-songwriter
 * 1950 – George Garzone, American saxophonist and educator
 * 1951 – Steven Springer, American guitarist and songwriter (d. 2012)
 * 1952 – Mark Bego, American author
 * 1952 – Anshuman Gaekwad, Indian cricketer
 * 1952 – Dennis Lamp, American baseball player
 * 1952 – Kim Duk-soo, Korean musician
 * 1952  – Jim Morrison, American baseball player and manager
 * 1953 – Nicholas Witchell, English journalist
 * 1954 – Charlie Barnett, American actor (d. 1996)
 * 1954  – Cherie Blair, English lawyer and academic
 * 1956 – Peter David, American author, actor, and screenwriter
 * 1956  – Tom Hogan, Australian cricketer
 * 1956  – Paolo Rossi, Italian footballer (d. 2020)
 * 1957 – Rosalind Chao, American actress
 * 1958 – Danielle Dax, English singer-songwriter and producer
 * 1958  – Khaled El Sheikh, Bahraini singer-songwriter
 * 1958  – Tony Fossas, Cuban-American baseball player and coach
 * 1958  – Marvin Lewis, American football player and coach
 * 1958  – Larry Mize, American golfer
 * 1959 – Jason Alexander, American actor, singer, and voice artist
 * 1959  – Frank Cottrell-Boyce, English author and screenwriter
 * 1959  – Hans Nijman, Dutch mixed martial artist and wrestler (d. 2014)
 * 1959  – Chris O'Sullivan, Australian rugby league player
 * 1959  – Elizabeth Peña, American actress (d. 2014)
 * 1959  – Karen Pierce, English diplomat
 * 1960 – Kurt Beyer, American wrestler
 * 1960  – Luis Moya, Spanish race car driver
 * 1961 – Chi McBride, American actor
 * 1961  – William C. McCool, American commander, pilot, and astronaut (d. 2003)
 * 1962 – Deborah Orr, Scottish journalist (d. 2019)
 * 1963 – Anne-Marie Cadieux, Canadian actress, director, and screenwriter
 * 1963  – Alex Proyas, Egyptian-Australian director, producer, and screenwriter
 * 1964 – Clayton Blackmore, Welsh footballer and manager
 * 1964  – Josefa Idem, German-born Italian kayaker
 * 1964  – Koshi Inaba, Japanese singer-songwriter
 * 1964  – Larry Krystkowiak, American basketball player and coach
 * 1964  – Katie Mitchell, English director and producer
 * 1964  – Julian Parkhill, English biologist and academic
 * 1964  – Bill Phillips, American businessman and author
 * 1965 – Mark Woodforde, Australian tennis player and sportscaster
 * 1966 – Pete Harnisch, American baseball player and coach
 * 1967 – LisaRaye McCoy, American actress, model, fashion designer, and First Lady of the Turks and Caicos Islands
 * 1967  – Chris Wilder, English footballer and manager
 * 1968 – Yvette Fielding, English actress and producer
 * 1968  – Adam Price, Welsh politician
 * 1969 – Donald Audette, Canadian ice hockey player
 * 1969  – Patrick Fiori, French singer-songwriter
 * 1969  – Jan Suchopárek, Czech footballer and manager
 * 1970 – Adrian Brunker, Australian rugby player
 * 1970  – Lucia Cifarelli, American singer-songwriter and keyboard player
 * 1970  – Ani DiFranco, American singer-songwriter and guitarist
 * 1970  – Giorgos Koltsidas, Greek footballer
 * 1971 – Moin Khan, Pakistani cricketer and coach
 * 1971  – Eric Montross, American basketball player and sportscaster (d. 2023)
 * 1971  – Sean Spicer, American political aide, 30th White House Press Secretary
 * 1972 – Sam Bettens, Belgian singer-songwriter and guitarist
 * 1972  – Alistair Campbell, Zimbabwean cricketer
 * 1972  – Jermaine Dupri, American rapper and producer
 * 1972  – Karl Pilkington, English actor and producer
 * 1973 – Ingrid Fliter, Argentinian pianist
 * 1973  – Vangelis Krios, Greek footballer and coach
 * 1974 – Ben Duckworth, Australian rugby league player
 * 1974  – Matt Hardy, American wrestler
 * 1974  – Layzie Bone, American rapper
 * 1975 – Kim Dong-moon, South Korean badminton player
 * 1975  – Chris Hawkins, English journalist and producer
 * 1975  – Eric Miller, Irish rugby player, footballer, and coach
 * 1975  – Vitali Yeremeyev, Kazakhstani ice hockey player
 * 1976 – Sarah Blasko, Australian singer-songwriter and producer
 * 1976  – Robert James-Collier, English actor
 * 1976  – Kip Pardue, American actor and model
 * 1976  – Valeriy Sydorenko, Ukrainian boxer
 * 1976  – Volodymyr Sydorenko, Ukrainian boxer
 * 1977 – Matthieu Descoteaux, Canadian ice hockey player
 * 1977  – Dmitri Kulikov, Estonian footballer
 * 1977  – Fabio Ongaro, Italian rugby player
 * 1977  – Rachael Yamagata, American singer-songwriter and pianist
 * 1978 – Benjamin Curtis, American guitarist, drummer, and songwriter (d. 2013)
 * 1978  – Anthony Mackie, American actor
 * 1979 – Ricky Davis, American basketball player
 * 1979  – Bryant McKinnie, American football player
 * 1979  – Fábio Simplício, Brazilian footballer
 * 1979  – Lote Tuqiri, Fijian-Australian rugby player
 * 1981 – Robert Doornbos, Dutch racing driver
 * 1981  – Helen Richardson-Walsh, English field hockey player
 * 1982 – Mait Künnap, Estonian tennis player
 * 1982  – Shyla Stylez, Canadian pornographic actress (d. 2017)
 * 1983 – Shane del Rosario, American mixed martial artist and kick-boxer (d. 2013)
 * 1983  – Joffrey Lupul, Canadian ice hockey player
 * 1984 – Patrick Ehelechner, German ice hockey player
 * 1984  – Matt Kemp, American baseball player
 * 1984  – Anneliese van der Pol, Dutch-American entertainer
 * 1985 – Joba Chamberlain, American baseball player
 * 1985  – Chris Johnson, American football player
 * 1985  – Cush Jumbo, British actress
 * 1985  – Lukáš Kašpar, Czech ice hockey player
 * 1985  – Hasan Minhaj, American comedian, actor, and television host
 * 1986 – Martin Cranie, English footballer
 * 1986  – Chris Volstad, American baseball player
 * 1987 – Skylar Astin, American actor and singer
 * 1988 – Juan Martín del Potro, Argentinian tennis player
 * 1988  – Kairi Sane, Japanese wrestler
 * 1988  – Yannick Weber, Swiss ice hockey player
 * 1989 – Brandon Jennings, American basketball player
 * 1989  – Taniela Lasalo, Australian rugby league player
 * 1991 – Lee Alexander, Scottish footballer
 * 1991  – Key, South Korean singer and entertainer
 * 1991  – Melanie Oudin, American tennis player
 * 1992 – Angel Garza, Mexican wrestler
 * 1993 – Petteri Lindbohm, Finnish ice hockey player
 * 1994 – Lee Mi-joo, South Korean singer and entertainer
 * 1996 – Napheesa Collier, American basketball player
 * 1997 – John Collins, American basketball player
 * 1999 – Song Yu-qi, Chinese singer

Pre-1600

 * 788 – Ælfwald I, king of Northumbria
 * 965 – Al-Mutanabbi, Arab poet (b. 915)
 * 1193 – Robert de Sablé, French knight
 * 1241 – Snorri Sturluson, Icelandic historian, poet, and politician (b. 1178)
 * 1253 – Wenceslaus I of Bohemia
 * 1267 – Beatrice of Provence, countess regnant of Provence (b. 1234)
 * 1386 – Dan I of Wallachia
 * 1390 – John I, Duke of Lorraine (b. 1346)
 * 1448 – Adolph I, Duke of Cleves (b. 1373)
 * 1461 – Charles, Prince of Viana, King of Navarre (b. 1421)
 * 1508 – Beatrice of Naples, queen consort of Hungary (b. 1457)
 * 1535 – Catherine of Saxe-Lauenburg (b. 1513)
 * 1571 – John Jewel, English bishop (b. 1522)
 * 1573 – Azai Hisamasa, Japanese warlord (b. 1524)

1601–1900

 * 1605 – Pontus de Tyard, French priest and poet (b. 1521)
 * 1675 – Valentin Conrart, French author, founded the Académie française (b. 1603)
 * 1728 – Christian Thomasius, German jurist and philosopher (b. 1655)
 * 1738 – Herman Boerhaave, Dutch botanist and physician (b. 1668)
 * 1764 – Robert Dodsley, English poet and playwright (b. 1703)
 * 1773 – Johan Ernst Gunnerus, Norwegian bishop and botanist (b. 1718)
 * 1789 – John Rogers, American lawyer and politician (b. 1723)
 * 1835 – Vincenzo Bellini, Italian composer (b. 1801)
 * 1851 – Émilie Gamelin, Canadian nun, founded the Sisters of Providence (b. 1800)
 * 1846 – John Ainsworth Horrocks, English-Australian explorer (b. 1818)
 * 1850 – José Gervasio Artigas, Uruguayan general and politician (b. 1764)
 * 1870 – Prosper Mérimée, French archaeologist and historian (b. 1803)
 * 1871 – Louis-Joseph Papineau, Canadian lawyer and politician (b. 1786)
 * 1873 – Jean Chacornac, French astronomer (b. 1823)
 * 1877 – Urbain Le Verrier, French mathematician and astronomer (b. 1811)
 * 1889 – Wilkie Collins, English novelist, short story writer, and playwright (b. 1824)
 * 1896 – Emmanuel Benner, French artist (b. 1836)
 * 1900 – William Marsh Rice, American businessman, founded Rice University (b. 1816)

1901–present

 * 1913 – Donato Álvarez, Argentinian general (b. 1825)
 * 1917 – Werner Voss, German lieutenant and pilot (b. 1897)
 * 1929 – Richard Adolf Zsigmondy, Austrian-German chemist, physicist, and academic, Nobel Prize laureate (b. 1865)
 * 1939 – Sigmund Freud, Austrian neurologist and psychiatrist (b. 1856)
 * 1939  – Francisco León de la Barra, Mexican politician and diplomat, interim president, 1911 (b. 1863)
 * 1940 – Hale Holden, American businessman (b. 1869)
 * 1943 – Elinor Glyn, English author, screenwriter, and producer (b. 1864)
 * 1944 – Jakob Schaffner, Swiss author and critic (b. 1875)
 * 1950 – Sam Barry, American basketball player and coach (b. 1892)
 * 1951 – Siegfried Bettmann, German engineer (b. 1863)
 * 1958 – Jacob Nicol, Canadian publisher, lawyer, and politician (b. 1876)
 * 1967 – Stanislaus Zbyszko, Polish wrestler and strongman (b. 1879)
 * 1968 – Pio of Pietrelcina, Italian priest and saint (b. 1887)
 * 1971 – James Waddell Alexander II, American mathematician and topologist (b. 1888)
 * 1973 – Pablo Neruda, Chilean poet and diplomat, Nobel Prize laureate (b. 1904)
 * 1974 – Cliff Arquette, American actor and comedian (b. 1905)
 * 1974  – Robbie McIntosh, Scottish drummer (b. 1950)
 * 1978 – Lyman Bostock, American baseball player (b. 1950)
 * 1979 – Catherine Lacey, English actress (b. 1904)
 * 1981 – Chief Dan George, Canadian actor, author, and poet (b. 1899)
 * 1987 – Bob Fosse, American actor, dancer, choreographer, and director (b. 1927)
 * 1988 – Tibor Sekelj, Hungarian-Serbian explorer and author (b. 1912)
 * 1992 – Ivar Ivask, Estonian poet and scholar (b. 1927)
 * 1992  – Glendon Swarthout, American author and academic (b. 1918)
 * 1992  – James Van Fleet, American general (b. 1892)
 * 1994 – Jerry Barber, American golfer (b. 1916)
 * 1994  – Robert Bloch, American author and screenwriter (b. 1917)
 * 1994  – Madeleine Renaud, French actress (b. 1900)
 * 1997 – Natalie Savage Carlson, American author (b. 1906)
 * 1998 – Ray Bowden, English footballer (b. 1909)
 * 1998  – Mary Frann, American actress (b. 1943)
 * 1999 – Ivan Goff, Australian-American screenwriter and producer (b. 1910)
 * 2000 – Aurelio Rodríguez, Mexican baseball player and manager (b. 1947)
 * 2000  – Carl Rowan, American journalist and author (b. 1925)
 * 2000  – Raoul Berger, American attorney and law professor (b. 1901)
 * 2001 – Ron Hewitt, Welsh footballer (b. 1928)
 * 2003 – Yuri Senkevich, Russian physician and journalist (b. 1937)
 * 2004 – Billy Reay, Canadian-American ice hockey player and coach (b. 1918)
 * 2005 – Filiberto Ojeda Ríos, Puerto Rican activist (b. 1933)
 * 2006 – Malcolm Arnold, English trumpet player and composer (b. 1921)
 * 2006  – Etta Baker, American singer and guitarist (b. 1913)
 * 2008 – Peter Leonard, Australian journalist (b. 1942)
 * 2008  – Loren Pope, American journalist and author (b. 1910)
 * 2009 – Paul B. Fay, American sailor and politician, United States Secretary of the Navy (b. 1918)
 * 2010 – Malcolm Douglas, Australian hunter and television host (b. 1941)
 * 2012 – Henry Champ, Canadian journalist and academic (b. 1937)
 * 2012  – Pavel Grachev, Russian general and politician, 1st Minister of Defence for Russia (b. 1948)
 * 2012  – Roberto Rodríguez, Venezuelan baseball player and coach (b. 1941)
 * 2012  – Corrie Sanders, South African boxer (b. 1966)
 * 2012  – Sam Sniderman, Canadian businessman, founded Sam the Record Man (b. 1920)
 * 2013 – Abdel Hamid al-Sarraj, Syrian colonel and politician (b. 1925)
 * 2013  – Gil Dozier, American captain, lawyer, and politician (b. 1934)
 * 2013  – Ruth Patrick, American botanist and immunologist (b. 1907)
 * 2014 – A. W. Davis, American basketball player and coach (b. 1943)
 * 2014  – Irven DeVore, American anthropologist and biologist (b. 1934)
 * 2014  – Don Manoukian, American football player and wrestler (b. 1934)
 * 2014  – Al Suomi, American ice hockey player and referee (b. 1913)
 * 2015 – Dayananda Saraswati, Indian monk and philosopher (b. 1930)
 * 2018 – Charles Kuen Kao, Hong Kong-American-British electrical engineer and physicist (b. 1933)
 * 2018  – Gary Kurtz, American film producer (b. 1940)
 * 2018  – Jane Fortune, American author, journalist, and philanthropist (b.1942)
 * 2020 – Juliette Gréco, French singer and actress (b. 1927)
 * 2021 – John Elliott, Australian businessman (b. 1941)
 * 2021  – Nino Vaccarella, Italian race car driver (b. 1933)

Holidays and observances

 * Christian feast day:
 * Adomnán
 * Cissa of Crowland (or of Northumbria)
 * Padre Pio
 * Pope Linus
 * Sossius
 * Thecla (Roman Catholic Church)
 * Xanthippe and Polyxena
 * September 23 (Eastern Orthodox liturgics)
 * Grito de Lares (Puerto Rico)
 * Holocaust Memorial Day (Lithuania)
 * Kyrgyz Language Day (Kyrgyzstan)
 * National Day (Saudi Arabia)
 * Teachers' Day (Brunei)
 * Celebrate Bisexuality Day (bisexual community)
 * International Day of Sign Languages