| 15 February 1145 | Italy [administration] | Bernard of Pisa is elected Pope Eugenius III following the death of Pope Lucius II. |
| 15 February 1483 | Uzbekistan [births and deaths] | Babur (original name Zahir-ud-Din Mohammad), emperor of India 1526–30, founder of the Mogul dynasty, descendant of Genghis Khan and of Timur Leng (Tamerlane), born in the principality of Fergana, Uzbekistan (–1530). |
| 15 February 1564 | Italy [births and deaths] | Galileo Galilei, Italian mathematician, physicist and astronomer, who developed the astronomical telescope, born in Pisa, Italy (–1642). |
| 15 February 1575 | France [political events] | King Henry III of France marries Louise de Vaudémont of Lorraine, thus allying himself with the Catholic House of Guise against the Huguenot (French Protestant) and Politique (moderate Catholic) parties. |
| 15 February 1763 | Prussia, Austria-HM [treaties] | The Treaty of Hubertusburg between Prussia and Austria restores the status quo before the Seven Years' War, returning Glatz and Silesia to Prussia. Prussia agrees to support the candidature of the Archduke Joseph of Austria as ‘king of the Romans’ (effective heir to his father's title of Holy Roman Emperor). |
| 15 February 1798 | Italy, France [political events] | The French-dominated Roman Republic is proclaimed in central Italy. Pope Pius VI refuses to surrender his temporal power and leaves Rome for Valence, France. |
| 15 February 1806 | France, Naples [Napoleonic Wars (1803–15)] | French troops enter Naples, Italy. Napoleon I's brother, Joseph Bonaparte, immediately begins administrative reform in the Italian kingdom. |
| 15 February 1820 | USA [births and deaths] | Susan B(rownell) Anthony, US suffragette whose work eventually leads to women's suffrage in the USA (1920), born in Adams, Massachusetts (–1906). |
| 15 February 1849 | UK [natural disasters] | Sixty-five people die when the Theatre Royal in London, England, burns down. |
| 15 February 1893 | USA, Pacific [administration] | US president Benjamin Harrison's administration submits a Hawaiian annexation treaty to the US Senate, but on 9 March the newly inaugurated president Grover Cleveland retracts the treaty amid controversy over US complicity in the Hawaiian revolution. |
| 15 February 1898 | USA, Cuba, Spain [political events] | The US warship Maine explodes in Havana harbour, killing 269 US Navy personnel. Despite a lack of evidence, Americans overwhelmingly blame Spain for the incident and begin to agitate for war. |
| 15 February 1934 | USA [legislation] | The Civil Works Emergency Relief Act becomes law in the USA, extending the scope of New Deal relief and work relief provision through civil works projects during the economic depression. |
| 15 February 1942 | Malaya, Japan, UK [World War II (1939–45)] | The strategic British colony and naval base of Singapore surrenders to Japanese forces, together with over 70,000 British and Commonwealth soldiers and airmen. British prime minister Winston Churchill later describes the event as ‘the worst disaster and largest capitulation in British history’. |
| 15 February 1965 | USA [births and deaths] | Nat ‘King’ Cole, US jazz and popular singer, dies in Santa Monica, California (45). |
| 15 February 1971 | Israel [political events] | Israel affirms a Jewish settlement policy in its occupied territories. |
| 15 February 1971 | UK [banking and finance] | Decimal currency is introduced in Britain: the half-crown and florin go out of use and the pound is now worth 100 rather than 240 pennies. |
| 15 February 1988 | USA [births and deaths] | Richard Feynman, US theoretical physicist in the field of quantum electrodynamics, dies in Los Angeles, California (69). |
| 15 February 1998 | Cyprus [elections] | Glafkos John Clerides is re-elected president of Cyprus and in March and begins talks with the European Union (EU) on the country's possible accession. |
| 15 February 2005 | USA [aircraft] | In response to the European Airbus consortium's new A380 superjumbo jet unveiled in January 2005, US aircraft manufacturer Boeing presents the first of its new generation of long-range airliners at its plant in Seattle. The 777-200LR will be the first passenger jet capable of flying non-stop from London, England, to Sydney, Australia. |