- Mar 3 Stanislav Shatalin, Russian economist (500 Days), dies
- Mar 4 Robert H. Dicke, American physicist (b. 1916)
- Mar 4 Carey Loftin, American actor (The Deer Hunder, The Goonies), dies at 83
- Mar 5 Samm Sinclair Baker, American diet author (b. 1909)
- Mar 6 Anthony Hopkins, English clinical neurologist and Director of the Research Unit at the Royal College of Physicians, dies at 59
- Mar 6 Cheddi B Jagan, dentist/founder PPP/Guyanese Premier (1953, 1957-64) dies
- Mar 6 Michael Manley, Jamaican PM (PNP, 1972-80, 89-92), dies
- Mar 7 Edward Mills Purcell, American physicist (Nobel 1952), dies at 84
- Mar 7 E. H. Bronner, German-American soap magnate (b. 1908)
- Mar 7 Geraldine Clinton Little, Irish poet (A Little Bouquet), dies at 73
- Mar 8 Alexander Salkind, producer (Superman), dies at 75
- Mar 9 Terry Nation, writer (Dr Who, Blake 7) at 66
- Mar 9 The Notorious B.I.G. [Christopher Wallace], American rapper shot dead at 24
- Mar 10 La Vern Baker, American singer (b. 1929)
- Mar 11 Lars Ahlin, Swedish writer (My Death is My Own), dies at 81
- Mar 11 Hugo Weisgall, American composer (4 Impressions), dies at 84
- Mar 14 Fred Zinnemann (director), dies of heart attack at 89
- Mar 14 John Curtis Jr, pres/CEO (Luby's Cafe), commits suicide at 58
- Mar 14 Jurek Becker, Polish-born German writer (Jacob the Liar), dies at 59
- Mar 14 Lucy Kroll, American talent agent, dies at 87
- Mar 15 Gail Davis, American actress (Annie Oakley), dies at 71
- Mar 15 Victor Vasarely, Hungarian-French painter and author (Op Art), dies at 90
- Mar 19 Willem De Kooning, Dutch artist (Abstract), dies of Alzheimer at 92
- Mar 20 Carlo Fassi, figure skating coach (Fleming, Hamill), dies at 67
- Mar 20 Grace Hefner, mother of Hugh Hefner (Playboy), dies at 101
- Mar 20 Tony Zale, American boxer (b. 1913)
- Mar 21 W. V. Awdry, English children's writer (b. 1911)
- Mar 24 Martin Caidin, American aviation writer, dies at 69
- Mar 24 Harold Melvin, American singer (Blue Notes), dies at 57
- Mar 25 Roberto Sanchez Vilella, governor of Puerto Rico in (1965-69), dies
- Mar 26 Marshall Applewhite, American cult leader (b. 1931)
- Mar 29 Eddie Ryder, American actor (General Hospital, Up Yours), dies at 74
- Mar 29 Ellen Clara Pollock, actress (Wicked Lady, Fake), dies at 94
- Mar 31 Edwin Alberian, TV celebrity (Clarabell), dies at 76
- Mar 31 Laxmishankar Pathak, food retailer, dies at 62