| 30511 | March 18 | Death | 1983 – Umberto II of Italy (b. 1904) |
| 30512 | March 18 | Death | 1984 – Charley Lau, American baseball player and coach (b. 1933) |
| 30513 | March 18 | Death | 1986 – Bernard Malamud, American author and educator (b. 1914) |
| 30514 | March 18 | Death | 1988 – Billy Butterfield, American trumpet player and cornet player (b. 1917) |
| 30515 | March 18 | Death | 1988 – Frank Wayne, American game show host and producer (b. 1917) |
| 30516 | March 18 | Death | 1990 – Robin Harris, American comedian and actor (b. 1953) |
| 30517 | March 18 | Death | 1993 – Kenneth E. Boulding, English-American economist and activist (b. 1910) |
| 30518 | March 18 | Death | 1995 – Sadri Alışık, Turkish actor (b. 1925) |
| 30519 | March 18 | Death | 1995 – Robin Jacques, English illustrator (b. 1920) |
| 30520 | March 18 | Death | 1996 – Odysseas Elytis, Greek poet and critic, Nobel Prize laureate (b. 1911) |
| 30521 | March 18 | Death | 1999 – Elizabeth Huckaby, American educator (b. 1905) |
| 30522 | March 18 | Death | 2000 – Eberhard Bethge, German theologian and academic (b. 1909) |
| 30523 | March 18 | Death | 2001 – Viktor Masing, Estonian botanist and ecologist (b. 1925) |
| 30524 | March 18 | Death | 2001 – John Phillips, American singer-songwriter and guitarist (The Mamas & the Papas) (b. 1935) |
| 30525 | March 18 | Death | 2002 – R. A. Lafferty, American soldier and author (b. 1914) |
| 30526 | March 18 | Death | 2002 – Gösta Winbergh, Swedish tenor (b. 1943) |
| 30527 | March 18 | Death | 2003 – Karl Kling, German race car driver (b. 1910) |
| 30528 | March 18 | Death | 2003 – Adam Osborne, Thai-English businessman, founded the Osborne Computer Corporation (b. 1939) |
| 30529 | March 18 | Death | 2004 – Harrison McCain, Canadian businessman, co-founded McCain Foods (b. 1927) |
| 30530 | March 18 | Death | 2006 – Michael Attwell, English actor (b. 1943) |
| 30531 | March 18 | Death | 2006 – Bill Beutel, American journalist (b. 1930) |
| 30532 | March 18 | Death | 2006 – Dan Gibson, Canadian photographer and cinematographer (b. 1922) |
| 30533 | March 18 | Death | 2007 – Bob Woolmer, South African cricketer, coach, and sportscaster (b. 1948) |
| 30534 | March 18 | Death | 2008 – Andrew Britton, English-American author (b. 1981) |
| 30535 | March 18 | Death | 2008 – Anthony Minghella, English director and screenwriter (b. 1954) |
| 30536 | March 18 | Death | 2008 – Geoffrey Pearson, Canadian diplomat and author (b. 1927) |
| 30537 | March 18 | Death | 2009 – Omid Reza Mir Sayafi, Iranian journalist and blogger (b. 1980) |
| 30538 | March 18 | Death | 2009 – Natasha Richardson, English actress (b. 1963) |
| 30539 | March 18 | Death | 2010 – Fess Parker, American actor, singer, and businessman (b. 1924) |
| 30540 | March 18 | Death | 2011 – Warren Christopher, American lawyer and politician, 63rd United States Secretary of State (b. 1925) |