| 29 April 975 | Byzantine Empire, Fatimid Caliphate, Egypt, Syria [Byzantine reconquests (963–1025)] | The Byzantine emperor John Tzimisces enters Baalbek (Heliopolis), Egypt, in the course of his third campaign, when he conquers northern Palestine, taking the cities of Caesarea and Damascus. |
| 29 April 1090 | Byzantine Empire [wars] | Aided by the Cumans, a nomadic people of Turkish origin, Byzantine emperor Alexius I Comnenus defeats the Pechenegs, a Turkish people settled in the area of modern Ukraine, who are blockading Constantinople, at Mount Levunium. |
| 29 April 1429 | France, England [Hundred Years War (1337–1453)] | The French military leader Joan of Arc arrives at Orléans, France and relieves the English siege. |
| 29 April 1670 | Papal States, Italy [Catholicism] | Emilio Altieri is elected Pope Clement X following the death of Pope Clement IX. |
| 29 April 1818 | Russia [births and deaths] | Alexander II, Tsar of Russia 1855–81 who is responsible for emancipating the Russian serfs, born in Moscow, Russia (–1881). |
| 29 April 1909 | United Kingdom [law and government] | The British chancellor of the Exchequer, David Lloyd George, introduces his ‘People's Budget’, which proposes taxes on land values, profits on land sales, and a ‘super-tax’ on high incomes, in order to raise money for defence and social expenditure. |
| 29 April 1916 | Iraq, Ottoman Empire, Anatolia, United Kingdom [World War I (1914–18)] | The Ottoman army recaptures the Mesopotamian city of Kut-al-Imara from the occupying British forces, following a siege dating from 7 December 1915. 10,000 prisoners are taken. |
| 29 April 1919 | Greece [political events] | The Dodecanese Islands vote to return to Greece, having been under Italian rule since 1912. |
| 29 April 1945 | Germany [World War II (1939–45)] | The German Führer Adolf Hitler marries his mistress, Eva Braun, in their Berlin bunker. |
| 29 April 1951 | UK, Austria [births and deaths] | Ludwig Wittgenstein, Austrian-born British philosopher, one of the most influential in the 20th century, dies in Cambridge, England (62). |
| 29 April 1975 | South Vietnam, USA [Vietnam War (1954–75)] | The last US personnel flee the South Vietnamese capital, Saigon (now Ho Ch Minh City), flying by helicopter from the US embassy compound. |
| 29 April 1980 | England [births and deaths] | Alfred Hitchcock, English film director best known for his films of suspense, dies in Bel Air, California (80). |
| 29 April 1996 | Netherlands, Yugoslavia [crime and punishment] | A United Nations (UN) war crimes tribunal opens in The Hague, the Netherlands, to investigate allegations of crimes against humanity committed during the Yugoslavian civil war. |
| 29 April 2001 | UK [statistics and demography] | The 10-yearly census in the UK takes place amid controversy about questions on ethnicity and nationality and reported bureaucratic failings. |
