- Apr 1 Leslie Cheung, Hong Kong actor, singer and composer (Farewell My Concubine), commits suicide at 46
- Apr 2 (Charles) Edwin Starr [Hatcher], American soul and R&B singer ("War"), dies of a heart attack at 61
- Apr 2 Michael Wayne, American film producer (Green Berets, McLintock), son of John Wayne, dies at 68
- Apr 3 Homer Banks, American singer and songwriter ("Be What You Are"), dies at 61
- Apr 3 Michael Kelly, American journalist (b. 1957)
- Apr 4 Anthony Caruso, American actor (b. 1916)
- Apr 4 Resortes, Mexican comedian (b. 1916)
- Apr 5 Arthur Knight, CEO (Courtaulds), dies at 86
- Apr 6 Babatunde Olatunji, Nigerian percussionist (Drums of Passion), educator, and social activist, dies at 75
- Apr 6 David Bloom, American reporter (b. 1963)
- Apr 6 Gerald Emmett Carter, Canadian Catholic clergyman (Archbishop of Toronto, 1978-90; Cardinal 1979-2003), dies at 91
- Apr 7 Cecile de Brunhoff, French storyteller (b. 1903)
- Apr 7 David Greene, British television director (b. 1921)
- Apr 7 Jutta Hipp, German-American jazz pianist and composer, dies at 78
Little Eva (1943-2003)
Apr 10 American pop singer ("The Loco-motion"; "Keep Your Hands Off My Baby"), dies of cervical cancer at 59
- Apr 11 Cecil Howard Green, British geophysicist and businessman (b. 1900)
- Apr 12 Cecil H. Green, American manufacturer (b. 1900)
- Apr 15 Erin Fleming, Canadian actress, dies at 61
- Apr 15 Leonard Tose, American trucking magnate and owner of NFL Philadelphia Eagles (1969-85), dies at 88
- Apr 15 Reg Bundy, British performer, dies at 56
- Apr 16 Graham Jarvis, Canadian actor (Mary Hartman, Mary Hartman - "Charlie"; Misery; 7th Heaven), dies of multiple myeloma at 72
- Apr 16 Graham Stuart Thomas, English author and garden designer (b. 1909)
- Apr 17 Earl King, American R&B and blues guitarists, singer, and songwriter ("Come On"; "Big Chief"), dies from diabetes-related complications at 69
- Apr 17 John Paul Getty Jr., American-born British oil magnate and billionaire (Getty Oil), dies of a chest infection at 70
- Apr 17 Robert Atkins, American dietician (b. 1930)
- Apr 17 Yiannis Latsis, Greek shipping tycoon, dies at 92
- Apr 18 Edgar F. Codd, English-American computer scientist who contributed to the theory and practice of database management systems, dies at 79 [1]
- Apr 19 Conrad Leonard, British composer and pianist, dies at 104
- Apr 20 Bernard Katz, German-born Australian biophysicist (Nobel Prize in Physiology or Medicine 1970), dies at 92
- Apr 20 Daijiro Kato, Japanese motorcycle racer (b. 1976)
- Apr 20 Ruth Hale, American playwright and actress (b. 1908)
Nina Simone (1933-2003)
Apr 21 American jazz pianist, singer, songwriter, arranger, and civil rights activist (“Mississippi Goddam”; “To Be Young, Gifted, and Black”, “Feeling Good”; “Wild Is The Wind”), dies of breast cancer at 70
- Apr 22 Felice Bryant, American songwriter (Bye Bye Love; Wake Up Little Susie), dies at 77
- Apr 22 Martha Griffiths, U.S. Congresswoman, dies at 91
- Apr 22 Michael Larrabee, American athlete (Olympic gold 400m, 4x400m relay 1964), dies from pancreatic cancer at 69
- Apr 23 Fernand Fonssagrives, French photographer, dies at 92
- Apr 23 James H. Critchfield, American C.I.A. officer, dies at 86
- Apr 25 Samson Kitur, Kenyan athlete (b. 1966)
- Apr 26 Max Nicholson, Irish environmentalist, dies at 98
- Apr 26 Peter Stone, American writer, dies at 73
- Apr 26 Rosemary Brown, Canadian politician, dies at 85
- Apr 27 Piet Roozenburg, Dutch World champion checker player (1948, 51, 52, 55), dies at 78
- Apr 30 Mark Berger, University of Kentucky professor (b. 1955)
- Apr 30 Peter "Possum" Bourne, New Zealand race car driver, dies at 47
Assassination
Drug Overdose
Gunshot Wound
Murder
Plane Crash
Suicide