September 17 is the 260th day of the year (261st in leap years) in the Gregorian calendar. There are 105 days remaining until the end of the year.
1901 – 2000
- 1908 – The Wright Flyer flown by Orville Wright, with Thomas Selfridge as passenger, crashes, killing Selfridge.
- 1914 – Andrew Fisher becomes Prime Minister of Australia for a third time.
- 1916 – World War I: German flying ace Manfred von Richthofen wins his first aerial combat near Cambrai, France.
- 1928 – The Okeechobee Hurricane hits southeastern Florida, killing more than 2,500 people.
- 1939 – World War II: The Soviet Union joins the Nazis' invasion of Poland.
- 1939 – World War II: German U-boat U 29 sinks British aircraft carrier HMS Courageous.
- 1939 – Taisto Maki becomes the first person to run the 10,000 metres in under 30 minutes, doing so in 29 minutes, 52 seconds.
- 1940 – World War II: Adolf Hitler calls off Operation Sealion after defeat in the Battle of Britain.
- 1943 – World War II: The Russian city of Bryansk is liberated.
- 1944 – World War II: Allied troops parachute into the Netherlands.
- 1949 – Canadian steamship SS Norronic burns in Toronto Harbour, killing over 118 people.
- 1957 – The Federation of Malaya (later Malaysia) joins the UN.
- 1974 – Bangladesh, Grenada and Guinea-Bissau join the UN.
- 1976 – The first Space Shuttle, the Enterprise, is unveiled by NASA.
- 1978 – The Camp David Accords are signed by Israeli Prime Minister Menachem Begin and Egyptian President Anwar Sadat.
- 1980 – The Solidarity trade union is established.
- 1980 – In Paraguay, former Nicaraguan President Anastasio Somoza Debayle is killed by Sandinista activists.
- 1983 – Vanessa L. Williams becomes the first African American Miss America.
- 1988 – The Summer Olympics in Seoul begin.
- 1991 – Estonia, Latvia, Lithuania, North Korea, South Korea, the Marshall Islands and the Federated States of Micronesia join the UN.
- 1993 – The last Russian troops leave Poland.
Up to 1900
- 879 – King Charles III of France (d. 929)
- 1192 – Minamoto no Sanetomo, Japanese shogun (d. 1219)
- 1216 – Robert I, Count of Artois (d. 1250)
- 1505 – Mary of Hungary (d. 1558)
- 1550 – Pope Paul V (d. 1621)
- 1605 – Francesco Sacrati, Italian composer (d. 1650)
- 1630 – Ranuccio II Farnese, Duke of Parma (d. 1694)
- 1674 – Ernest Augustus, Duke of York and Albany (d. 1728)
- 1677 – Stephen Hales, English physiologist and chemist (d. 1761)
- 1688 – Maria Luisa of Savoy, Queen of Spain (d. 1714)
- 1730 – Friedrich Wilhelm von Steuben, Prussian army officer (d. 1794)
- 1739 – John Rutledge, Chief Justice of the United States and Governor of South Carolina (d. 1800)
- 1743 – Marquis de Condorcet, French mathematician (d. 1794)
- 1764 – John Goodricke, English astronomer (d. 1786)
- 1771 – Johann August Apel, German jurist and writer (d. 1816)
- 1776 – Langdon Cheves, American politician (d. 1857)
- 1806 – Duchenne de Boulogne, French neurologist (d. 1875)
- 1811 – John Brough, 26th Governor of Ohio (d. 1865)
- 1819 – Marthinus Wessel Pretorius, 1st President of the Republic of South Africa (d. 1901)
- 1826 – Bernhard Riemann, German mathematician (d. 1866)
- 1832 – Sergey Botkin, Russian physician (d. 1889)
- 1850 – Guerra Junqueiro, Portuguese lawyer, journalist, writer and poet (d. 1923)
- 1854 – David Dunbar Buick, Scottish-born American businessman (d. 1929)
- 1857 – Konstantin Eduardovich Tsiolkovskii, Russian rocket scientist (d. 1935)
- 1859 – I. L. Patterson, American politician, 18th Governor of Oregon (d. 1929)
- 1864 – Mykhailo Kotsiubynsky, Ukrainian writer (d. 1913)
- 1869 – Christian Lous Lange, Norwegian peace advocate (d. 1938)
- 1872 – Florencio Harmodio Arosemena, 14th President of Panama (d. 1945)
- 1878 – Vincenzo Tommasini, Italian composer (d. 1950)
- 1879 – Periyar E. V. Ramaswamy, Indian businessman, politician and activist (d. 1973)
- 1883 – William Carlos Williams, American poet (d. 1963)
- 1885 – George Cleveland, Canadian actor (d. 1957)
- 1890 – France Bevk, Slovenian writer (d. 1970)
- 1892 – Hendrik Andriessen, Dutch composer and organist (d. 1981)
- 1895 – Princess Margaret of Denmark (d. 1992)
- 1900 – J. Willard Marriott, American businessman (d. 1985)
1901 – 1950
- 1901 – Francis Chichester, British sailor and adventurer (d. 1972)
- 1903 – Dolores Costello, American actress (d. 1979)
- 1904 – Frederick Ashton, English ballet dancer and choreographer (d. 1988)
- 1904 – Jerry Colonna, American singer-songwriter and actor (d. 1986)
- 1906 – Junius Richard Jayewardene, President of Sri Lanka (d. 1996)
- 1907 – Warren E. Burger, Chief Justice of the United States (d. 1995)
- 1914 – Shin Kanemaru, Japanese politician (d. 1996)
- 1915 – M. F. Husain, Indian painter (d. 2011)
- 1916 – Mary Stewart, English novelist (d. 2014)
- 1917 – Isang Yun, Korean-German composer (d. 1995)
- 1918 – Chaim Herzog, President of Israel (d. 1997)
- 1922 – Agostinho Neto, 1st President of Angola (d. 1979)
- 1922 – Virgilio Barco Vargas, President of Colombia (d. 1997)
- 1923 – Hank Williams, American musician (d. 1953)
- 1925 – John List, American murderer (d. 2008)
- 1926 – Jean-Marie Lustiger, French cardinal (d. 2007)
- 1928 – Roddy McDowall, British actor (d. 1998)
- 1929 – Stirling Moss, British racing driver
- 1929 – Pat Crowley, American actress
- 1930 – David Huddleston, American actor (d. 2016)
- 1930 – Thomas Patten Stafford, American astronaut
- 1930 – Edgar Mitchell, American astronaut (d. 2016)
- 1931 – Anne Bancroft, American actress (d. 2005)
- 1933 – Claude Provost, Canadian ice hockey player (d. 1984)
- 1933 – Chuck Grassley, United States Senator from Iowa
- 1934 – Maureen Connolly, American tennis player (d. 1969)
- 1935 – Ken Kesey, American writer (d. 2001)
- 1936 – Rolv Wesenlund, Norwegian actor and singer (d. 2013)
- 1937 – Nigel Boocock, English speedway rider (d. 2015)
- 1939 – David Souter, U.S. Supreme Court Justice
- 1940 – Jan Eliasson, Swedish diplomat
- 1940 – Lorella De Luca, Italian actress (d. 2014)
- 1942 – Des Lynam, English television presenter
- 1942 – Lupe Ontiveros, American actress (d. 2012)
- 1944 – Reinhold Messner, Italian mountaineer
- 1945 – Phil Jackson, American basketball player and coach
- 1945 – Bruce Spence, New Zealand actor
- 1945 – David Emerson, Canadian politician
- 1946 – Billy Bonds, English footballer
- 1947 – Tessa Jowell, English politician
- 1948 – John Ritter, American actor (d. 2003)
- 1948 – Kemal Monteno, Bosnian singer (d. 2015)
- 1950 – Narendra Modi, Indian politician, Prime Minister of India
1951 – 1975
- 1951 – Cassandra Peterson, American actress
- 1951 – Russell Brown, Scottish politician
- 1951 – Kermit Washington, American basketball player
- 1953 – Rita Rudner, American actress and comedienne
- 1953 – Tamasin Day-Lewis, English chef
- 1954 – Joel-François Durand, French composer
- 1956 – Andreas Starke, Lord Mayor of Bamberg in Bavaria
- 1956 – Almazbek Atambayev, President of Kyrgyzstan
- 1957 – Richie Ramone, American musician (The Ramones)
- 1958 – Janez Jansa, former Prime Minister of Slovenia
- 1960 – Damon Hill, British racing driver
- 1960 – Annabelle Apsion, British actress
- 1960 – Kevin Clash, American actor and puppeteer
- 1961 – Pamela Melroy, American astronaut
- 1962 – Baz Luhrmann, Australian movie director
- 1962 – Hesham Qandil, 51st Prime Minister of Egypt
- 1962 – BeBe Winans, American singer-songwriter and producer
- 1963 – Warren Gatland, New Zealand rugby player and coach
- 1965 – Yuji Naka, Japanese video game designer, creator of Sonic the Hedgehog
- 1966 – Paula Jones, American state employee
- 1968 – Anastacia, American singer
- 1968 – Marie-Chantal, former Crown Princess of Greece
- 1968 – Akhenaton, French rapper and producer
- 1968 – Tito Vilanova, Spanish football manager (d. 2014)
- 1969 – Ken Doherty, Irish snooker player
- 1969 – Keith Flint, English singer-songwriter (The Prodigy)
- 1970 – Dallas Campbell, Scottish television presenter
- 1971 – Mauro Milanese, Italian footballer
- 1971 – Mike Catt, English rugby player
- 1972 – Bobby Lee, American comedian and actor
- 1973 – Diego Albanese, Argentine rugby player
- 1974 – Sheed Wallace, American basketball player
- 1975 – Constantine Maroulis, American singer
From 1976
- 1977 – Simone Perrotta, Italian footballer
- 1979 – Chuck Comeau, Canadian musician (Simple Plan)
- 1980 – Shabana Mahmood, English lawyer and politician
- 1981 – Bakari Koné, Ivorian footballer
- 1982 – Shermine Shahrivar, Iranian-German model
- 1983 – Jennifer Peña, American singer-songwriter, producer and actress
- 1983 – Aiza, Filipino singer and actor
- 1984 – John Kucera, Canadian skier
- 1985 – Tomas Berdych, Czech tennis player
- 1985 – Alexander Ovechkin, Russian ice hockey player
- 1985 – Jon Walker, American singer-songwriter
- 1985 – Umit Korkmaz, Turkish footballer
- 1985 – Tupouto'a 'Ulukalala, Crown Prince of Tonga
- 1989 – Kate Deines, American soccer player
- 1989 – Dijon Talton, American actor and singer
- 1991 – Minako Kotobuki, Japanese voice actress and singer
- 1991 – Ryo Ishikawa, Japanese golfer
- 1994 – Taylor Ware, American singer
- 2008 – Mia Talerico, American actress
Up to 1900
- 454 – Pope Dioscorus I of Alexandria
- 456 – Remistus, Roman general
- 1179 – Hildegard of Bingen, German abbess and composer (b. 1098)
- 1312 – Ferdinand IV of Castile (b. 1285)
- 1322 – Robert III of Flanders (b. 1249)
- 1422 – Constantine II of Bulgaria
- 1574 – Pedro Menendez de Aviles, Spanish admiral and explorer (b. 1519)
- 1575 – Heinrich Bullinger, Swiss religious reformer (b. 1504)
- 1665 – King Philip IV of Spain (b. 1605)
- 1676 – Sabbatai Zevi, Montenegrin rabbi, founder of the Jewish Sabbatean Movement (b. 1626)
- 1679 – John of Austria the Younger, Spanish general (b. 1629)
- 1762 – Francesco Geminiani, Italian violinist (b. 1687)
- 1802 – Richard Owen Cambridge, English poet and historian (b. 1717)
- 1808 – Benjamin Bourne, American jurist and politician (b. 1755)
- 1836 – Antoine Laurent de Jussieu, French botanist (b. 1748)
- 1863 – Alfred de Vigny, French author, poet and playwright (b. 1797)
- 1877 – Henry Fox Talbot, British inventor and photography pioneer (b. 1800)
- 1894 – Deng Shichang, Chinese admiral (b. 1849)
1901 – 2000
- 1904 – Kartini, Indonesian activist (b. 1879)
- 1907 – Ignaz Brüll, Austrian pianist and composer (b. 1846)
- 1908 – Thomas Selfridge, First Lieutenant of the United States Army (b. 1882)
- 1909 – Thomas Bent, Premier of Victoria (b. 1838)
- 1916 – Hermann Krone, German photographer (b. 1827)
- 1923 – Stephanos Dragoumis, Prime Minister of Greece (b. 1842)
- 1948 – Folke Bernadotte, Swedish diplomat (b. 1895)
- 1951 – Jimmy Yancey, American pianist (b. 1898)
- 1961 – Adnan Menderes, Prime Minister of Turkey (b. 1899)
- 1965 – Alejandro Casona, Spanish poet and playwright (b. 1903)
- 1966 – Fritz Wunderlich, German tenor (b. 1930)
- 1970 – France Bevk, Slovenian writer (b. 1890)
- 1972 – Akim Tamiroff, Georgian actor (b. 1899)
- 1973 – Hugo Winterhalter, American bandleader (b. 1909)
- 1980 – Anastasio Somoza Debayle, former President of Nicaragua (b. 1925)
- 1985 – Laura Ashley, Welsh designer (b. 1925)
- 1991 – Zino Francescatti, French violinist (b. 1902)
- 1993 – Willie Mosconi, American pool player (b. 1913)
- 1994 – Karl Popper, Austrian philosopher (b. 1902)
- 1994 – Vitas Gerulaitis, American tennis player (b. 1954)
- 1996 – Spiro Agnew, Vice President of the United States (b. 1918)
- 1997 – Red Skelton, American entertainer (b. 1913)
- 2000 – Paula Yates, British television personality (b. 1959)
From 2001
- 2003 – Erich Hallhuber, German actor (b. 1951)
- 2006 – Patricia Kennedy Lawford, sister of John F. Kennedy (b. 1924)
- 2009 – Noordin Mohammad Top, Malaysian Islamist militant (b. 1968)
- 2011 – Kurt Sanderling, German conductor (b. 1912)
- 2012 – Russell Train, American politician (b. 1920)
- 2013 – Eiji Toyoda, Japanese industrialist (b. 1913)
- 2013 – Marti de Riquer i Morera, Spanish-Catalan linguist (b. 1914)
- 2014 – Andriy Husin, Ukrainian footballer (b. 1972)
- 2014 – China Zorrilla, Uruguayan actress (b. 1922)
- 2014 – George Hamilton IV, American country music singer (b. 1937)
- 2014 – Peter von Bagh, Finnish movie historian (b. 1943)
- 2014 – Lorna Thomas, Australian cricketer and coach (b. 1917)
- 2015 – Dettmar Cramer, German football manager (b. 1925)
- 2015 – Milo Hamilton, American sportscaster (b. 1927)
- 2015 – David Willcocks, British choirmaster (b. 1919)
- 2015 – Vadim Kuzmin, Russian theoretical physicist (b. 1937)
- 2016 – Bahman Golbarnezhad, Iranian Paralympic cyclist (b. 1968)
- 2016 – Charmian Carr, American actress (b. 1942)
- 2016 – Sigge Parling, Swedish footballer (b. 1930)