| 45841 | April 20 | Death | 1944 – Elmer Gedeon, American baseball player and pilot (b. 1917) |
| 45842 | April 20 | Death | 1945 – Erwin Bumke, Polish-German jurist and politician (b. 1874) |
| 45843 | April 20 | Death | 1947 – Christian X of Denmark (b. 1870) |
| 45844 | April 20 | Death | 1951 – Ivanoe Bonomi, Italian politician, 25th Prime Minister of Italy (b. 1873) |
| 45845 | April 20 | Death | 1964 – Eddie Dyer, American baseball player and manager (b. 1899) |
| 45846 | April 20 | Death | 1967 – Léo-Paul Desrosiers, Canadian journalist and author (b. 1896) |
| 45847 | April 20 | Death | 1968 – Rudolph Dirks, German-American illustrator (b. 1877) |
| 45848 | April 20 | Death | 1969 – Vjekoslav Luburić, Croatian general (b. 1911) |
| 45849 | April 20 | Death | 1975 – John Vachon, American photographer (b.1914) |
| 45850 | April 20 | Death | 1980 – M. Canagaratnam, Sri Lankan politician (b. 1924) |
| 45851 | April 20 | Death | 1982 – Archibald MacLeish, American poet, playwright, and lawyer (b. 1892) |
| 45852 | April 20 | Death | 1986 – Sibte Hassan, Pakistani journalist, scholar, and activist (b. 1916) |
| 45853 | April 20 | Death | 1989 – Doru Davidovici, Romanian pilot (b. 1945) |
| 45854 | April 20 | Death | 1990 – Arnold Alas, Estonian soldier and architect (b. 1911) |
| 45855 | April 20 | Death | 1991 – Steve Marriott, English singer-songwriter, producer, and actor (Small Faces and Humble Pie) (b. 1947) |
| 45856 | April 20 | Death | 1991 – Don Siegel, American director and producer (b. 1912) |
| 45857 | April 20 | Death | 1992 – Marcel Albers, Dutch race car driver (b. 1967) |
| 45858 | April 20 | Death | 1992 – Benny Hill, English comedian, actor, and screenwriter (b. 1924) |
| 45859 | April 20 | Death | 1993 – Cantinflas, Mexican actor, producer, and screenwriter (b. 1911) |
| 45860 | April 20 | Death | 1994 – Jean Carmet, French actor (b. 1920) |
| 45861 | April 20 | Death | 1996 – Trần Văn Trà, Vietnamese general and politician (b. 1918) |
| 45862 | April 20 | Death | 1996 – Christopher Robin Milne, English bookseller (b. 1920) |
| 45863 | April 20 | Death | 1999 – Casualties of the Columbine High School massacre:Cassie Bernall, American student (b. 1981)Eric Harris, American student and murderer (b. 1981)Dylan Klebold, American student and murderer (b. 1981)Rachel Scott, American student, inspired the Rachel |
| 45864 | April 20 | Death | 1999 – Rick Rude, American wrestler and sportscaster (b. 1958) |
| 45865 | April 20 | Death | 1999 – Señor Wences, Spanish ventriloquist and comedian (b. 1896) |
| 45866 | April 20 | Death | 2001 – Giuseppe Sinopoli, Italian conductor and composer (b. 1946) |
| 45867 | April 20 | Death | 2002 – Alan Dale, American singer (b. 1925) |
| 45868 | April 20 | Death | 2002 – Pierre Rapsat, Belgian singer-songwriter (b. 1948) |
| 45869 | April 20 | Death | 2003 – Ruth Hale, American actress and playwright (b. 1908) |
| 45870 | April 20 | Death | 2003 – Daijiro Kato, Japanese motorcycle racer (b. 1976) |