- Mar 4 Wesley Bolin, former Governor of the U.S. State of Arizona (b. 1909)
- Mar 7 Steve Bilko, American baseball player, dies at 49
- Mar 11 Claude François, French pop singer-songwriter ("Comme d'habitude"), electrocuted in a home mishap at 39
- Mar 12 John Cazale, American stage and screen character actor (The Godfather; Dog Day Afternoon; The Deer Hunter), dies of lung and bone cancer at 42
- Mar 12 Tolchard Evans, British pop pianist, songwriter (Lady of Spain; If) and bandleader, dies at 76
- Mar 12 Theresa Weld Blanchard, American figure skater (US Singles C'ship 1914, 20-24; Pairs C'ship 1920-27; Olympic bronze 1920), dies at 84
- Mar 13 David McKinley Williams, Welsh born American church composer, dies at 91
- Mar 13 Ghulam Guard, Indian cricketer (lefty pace bowler in 2 Tests for India 1959), dies at 52
- Mar 17 George Dickinson, New Zealand ruby player and cricketer (8 wickets in 3 Tests for NZ), dies at 75
- Mar 18 Faith Baldwin, American author (They Who Love), dies at 84
- Mar 18 Peggy Wood, actress (One Life to Live, Mama), dies at 86
- Mar 19 Gaston Julia, French mathematician (b. 1893)
- Mar 21 Louis Cottrell Jr., Creole-American jazz clarinetist and tenor saxophonist (Heritage Hall Jazz Band), dies at 67
- Mar 23 Bill Kenny, American singer, dies at 63
- Mar 24 Leigh Brackett, American sci-fi author (Ginger Star), dies at 62
- Mar 25 Jack Hulbert, British actor (Into the Blue, Bulldog Jack), dies at 85
- Mar 26 Alix Combelle, French swing saxophonist, clarinetist, and bandleader (Quintette du Hot Club de France), dies at 65
- Mar 27 Wilfred Pickles, British actor (Billy Liar, Gay Dog), dies at 73
- Mar 27 Dutch Zwilling, American baseball outfielder (Federal League HR all-time leader), dies at 89
- Mar 29 Jayasinghrao Ghorpade, Indian cricket batsman (8 Tests @ 15.26), dies at 47
- Mar 30 George Paine, English cricket spin bowler (4 Tests, 17 wickets; Warwickshire), dies at 69
- Mar 30 Harold Gimblett, English cricket batsman (3 Tests, 1 x 50; 265 career FC sixes; Somerset CCC), dies from an overdose at 63
- Mar 30 Larry Young [Khalid Yasin], American jazz musician (Unity), dies at 37 in unclear circumstances
- Mar 31 Astrid Allwyn, actress (Love Affair, Girl for Calgary), dies at 68
- Mar 31 Charles Herbert Best, American-Canadian physiologist/co-discoverer (Insulin), dies at 79