April 14 is the 104th day of the year in the Gregorian calendar (105th in leap years). There are 261 days remaining.
- 43 BC – Battle of Forum Gallorum. Mark Antony, besieging Julius Caesar's assassin Decimus Junius Brutus in Mutina, defeats the forces of the consul Pansa, who is killed.
- AD 69 – Vitellius, commander of the Rhine armies, defeats Emperor Otho in the Battle of Bedriacum and seizes the throne.
- 1028 – Henry III, son of Conrad, was elected king of the Germans.
- 1205 – Battle of Adrianople between Bulgars and Crusaders.
- 1450 – Battle of Formigny. French attack and nearly annihilate English, ending English domination in northern France.
- 1471 – In England, the Yorkists under Edward IV defeated the Lancastrians under Warwick at the battle of Barnet; the Earl of Warwick was killed and Edward IV resumed the throne.
- 1632 – Battle of Rain, Swedes under Gustavus Adolphus defeat the Holy Roman Empire during the Thirty Years' War.
- 1775 – The first abolition society in America was established. The "Society for the Relief of Free Negroes Unlawfully Held in Bondage" was organized in Philadelphia by Benjamin Franklin and Benjamin Rush.
- 1828 – Noah Webster copyrights the first edition of his dictionary
- 1849 – Hungary declared itself independent of Austria with Louis Kossuth as its leader.
- 1860 – The first Pony Express rider reaches Sacramento, California
- 1861 – At the start of the American Civil War, the battle of Fort Sumter ended after the Confederates under Beuaregard bombarded the fort with 4,000 shells. The first causualty of the Civil War died when his cannon backfired.
- 1864 – Battle at the Düppeler Schanzen: The Prussian Army defeats the Danish and finally separates Schleswig from Danmark, Schleswig becomes a part of Germany.
- 1865 – Abraham Lincoln is shot by John Wilkes Booth; he dies the next day.
- 1890 – The Pan American Union was founded by the First International Conference of American States at their meeting in Washington. Known originally as the International Bureau of American Republics, William Elleroy Curtis became its first director.
- 1894 – Thomas Edison demonstrates the kinetoscope, a device for peep-show viewing using photographs that flip in sequence, a precursor to movies.
- 1910 – President William Howard Taft becomes the first president to throw out the first baseball on opening day.
- 1912 – RMS Titanic strikes an iceberg on its maiden voyage – it finishes sinking at about 2:20 am the next day.
- 1931 – Spanish Cortes deposes King Alfonso XIII and proclaims the 2nd Spanish Republic.
- 1935 – "Black Sunday", the worst dust storm of the Dust Bowl.
- 1935 – Babe Ruth played his first National League gane in Fenway Park in Boston, Massachusetts. He was playing for the Boston Braves, not his old team the Red Sox, in this, his last year of pro ball in the major leagues. In this season, Ruth played 28 games, getting 13 hits and six home runs, before retiring.
- 1940 – Royal Marines land in Namsos, Norway, occupying key points, preparatory to a larger force arriving two days later.
- 1944 – Huge explosion rocks the Bombay harbour killing 300 and causing a loss of 20 million pounds at that time.
- 1962 – Georges Pompidou becomes Prime Minister of France.
- 1969 – At the Academy Awards, a tie between Katharine Hepburn and Barbra Streisand results in the two sharing the Best Actress Oscar; Hepburn also becomes the only actress to win three Best Actress Oscars.
- 1981 – The Space Shuttle Columbia passes its first test flight.
- 1986 – In retaliation for the bombing of a West Berlin night club where a U.S. serviceman was killed, Ronald Reagan ordered major bombing raids against Tripoli and Benghazi, in Libya, that killed 60 people.
- 1986 – 2.2 lb (1kg) hailstones fall on the Gopalganj district of Bangladesh, killing 92. These are the heaviest hailstones ever recorded.
- 1988 – USS Samuel B. Roberts strikes a mine in the Persian Gulf during Operation Earnest Will. U.S. retaliates against Iran on April 18 with Operation Praying Mantis, the world's largest naval battle since World War II.
- 2003 – Jean Charest's Parti libéral du Québec defeats Bernard Landry and the Parti Québécois in Quebec's general elections.
- 2003 – The body of Laci Peterson is found in California.
- 1629 – Christiaan Huygens, mathematician (d. 1695)
- 1788 – David G. Burnet, interim president of the Republic of Texas (d. 1870)
- 1827 – Augustus Pitt-Rivers, archaeologist (d. 1900)
- 1831 – Gerhard Rohlfs, scientist (d. 1896)
- 1842 – Catherine Eddowes, fourth confirmed victim of Jack the Ripper (d. 1888)
- 1868 – Peter Behrens, German architect and designer (d. 1940)
- 1886 – Ernst Robert Curtius, romanist (d. 1956)
- 1891/1892 – Bhimrao Ramji Ambedkar, politician (d. 1956)
- 1902 – Menachem Mendel Schneerson, Lubavitcher Rebbe (d. 1994)
- 1904 – Sir John Gielgud, actor (d. 2000)
- 1907 – François Duvalier, Haitian politician (d. 1971)
- 1908 – Hermann Stahl, writer
- 1917 – Marvin Miller, American labor activist
- 1925 – Rod Steiger, actor (d. 2002)
- 1925 – Abel Muzorewa, Prime Minster of Zimbabwe Rhodesia
- 1930 – Bradford Dillman, American actor
- 1933 – Morton Subotnick, composer
- 1935 – Erich von Däniken, writer
- 1936 – Kenneth Mars, actor
- 1936 – Frank Serpico, American policeman
- 1940 – Loretta Lynn, country music singer
- 1941 – Julie Christie, actress
- 1941 – Pete Rose, baseball player
- 1942 – Valeri Brumel, athlete (d. 2003)
- 1942 – Valentin Lebedev, cosmonaut
- 1945 – Ritchie Blackmore, rock music guitarist
- 1951 – Julian Lloyd Webber, musician
- 1960 – Brad Garrett, actor
- 1961 – Robert Carlyle, British actor
- 1965 – Khalid Shaikh Mohammed, suspected military head of Osama bin Laden's al-Qaeda (his birth date is also reported to be March 1, 1964)
- 1966 – Greg Maddux, baseball player
- 1966 – David Justice, baseball player
- 1968 – Anthony Michael Hall, actor
- 1973 – Adrien Brody, actor
- 1974 – Da Brat, rap musician
- 1977 – Sarah Michelle Gellar, actress
- 1471 – Richard Neville, 16th Earl of Warwick, English kingmaker (b. 1428)
- 1759 – Georg Friedrich Handel, German composer (b. 1685)
- 1914 – Hubert Bland, co-founder of Fabian Society (b. 1855)
- 1917 – Ludovich Lazarus Zamenhof, creator of Esperanto (b. 1859)
- 1925 – John Singer Sargent, English artist (b. 1856)
- 1930 – Vladimir Mayakovsky, Russian writer (b. 1893)
- 1935 – Amalie Emmy Noether, mathematician (b. 1882)
- 1964 – Rachel Carson, American writer (b. 1907)
- 1968 – Al Benton, Major League Baseball player (b. 1911)
- 1975 – Fredric March, actor (b. 1897)
- 1978 – Sophia Lyon Fahs, educator and religious theorist
- 1986 – Simone de Beauvoir, French feminist writer (b. 1908)
- 1989 – Pete Farndon, British musician (The Pretenders)
- 1995 – Burl Ives, American folk singer and actor (b. 1909)
- 1999 – Anthony Newley, actor, singer (b. 1931)
- 1999 – Ellen Corby, American actress
- 1999 – Bill Wendell, American broadcaster
- 2000 – Phil Katz, American computer programmer
- 2001 – Hiroshi Teshigahara, director (b. 1927)
Holidays and Observances
April 13 – April 15 – March 14 – May 14 — listing of all days