- Apr 1 Dan Flavin, US minimalist sculptor
- Apr 1 Stan Weston, US toy licensing agent, had concept for G.I. Joe, born in Brooklyn, New York (d. 2017)
- Apr 3 Bob Dornan, American politician, U.S. House of Representatives from California, born in NYC, New York
- Apr 4 Frits Bolkestein, Dutch politician (People's Party for Freedom and Democracy), born in Amsterdam
- Apr 4 Robin Phillips, English multi-millionaire manufacturer (hand-dryer)
- Apr 4 Seoirse Bodley, Irish composer and professor of music (University College Dublin), born in Dublin
- Apr 4 Bill France, Jr., NASCAR pioneer, born in Washington, D.C. (d. 2007)
- Apr 5 Frank Gorshin, American comedian and impersonator (Riddler-Batman), born in Pittsburgh, Pennsylvania (d. 2005)
- Apr 5 Larry Felser, American sports columnist, born in Buffalo, New York (d. 2013)
- Apr 6 Dudley Sutton, British actor (Leather Boys, Brimstone & Treacle)
- Apr 6 Roy Goode, British lawyer
- Apr 6 Eduardo Malapit, American Democratic politician (d. 2007)
- Apr 7 Wayne Rogers, US actor (M*A*S*H, House Calls), born in Birmingham Alabama (d. 2015)
- Apr 8 Jaroslav Smolka, Czech composer
- Apr 9 Jacques Molicard, translator/navigator
- Apr 9 Jean-Paul Belmondo, French actor (Casino Royale, Magnifique), born in Paris, France
- Apr 9 Richard Rose, Professor of Public Policy (Strathclyde University)
- Apr 10 Philip Corner, American composer, born in NYC, New York
- Apr 10 Poncie Ponce, American actor (Kazuo Kim-Hawaiian Eye), born in Maui, Hawaii (d. 2013)
- Apr 10 Robert Rhodes James, British politician historian (Gallipoli), born in India (d. 1999)
- Apr 10 Rokusuke Ei, Japanese author and lyricist (Sukiyaki), born in Asakusa, Tokyo (d. 2016)
- Apr 10 Ron Murphy, Canadian NHL player (New York Rangers), born in Ontario, Canada (d. 2014)
- Apr 11 Tony Brown, American journalist (Tony Brown's Journal), born in Charleston, West Virginia
- Apr 12 Montserrat Caballé, Spanish soprano, born in Barcelona, Spain
- Apr 13 Ben Nighthorse Campbell, US politician (Sen-D Colorado)
- Apr 13 Shani Wallis, Irish singer/actress (Oliver)
- Apr 14 Morton Subotnick, US composer (Wild Bull), born in Los Angeles, California
- Apr 15 Boris Strugatsky, Soviet-Russian science fiction author (Tale of Troika)
Elizabeth Montgomery
Apr 15 Elizabeth Montgomery, US actress (Samantha/Serena-Bewitched), born in Los Angeles, California
Elizabeth Montgomery
- Apr 15 Roy Clark, Meherrin, Virginia, US country singer (Hee Haw, The Tonight Show)
- Apr 16 Joan Bakewell, British broadcaster/actress (Cold Comfort Farm)
- Apr 16 Perry Botkin Jr, US orchestra leader (Bert Convy Show), born in NYC, New York
- Apr 18 Alan Devereux, CEO (Scottish Tourist Board)
- Apr 19 Jayne Mansfield [Vera Jane Palmer], US actress (The Girl Can't Help It), born in Bryn Mawr, Pennsylvania (d. 1967)
- Apr 19 Harold "Dickie" Bird, English cricketer (noted England Test umpire)
- Apr 22 John A. Llewellyn, Cardiff Wales, astronaut
- Apr 22 Robin Hutton, merchant banker
- Apr 23 Roger Wittevrongel, Flemish painter, born in Blankenberge, Belgium
- Apr 24 Freddie Scott, US songwriter and singer (Cry to Me)
- Apr 24 Patricia Bosworth, US actor, journalist, writer, and biographer
- Apr 24 Claire Davenport, British actress (d. 2002)
- Apr 24 Alan Eagleson, Canadian ice hockey agent and promoter
- Apr 24 Helmuth Lohner, Austrian actor
- Apr 25 Helen Paling, British circuit judge
- Apr 25 Jerry Leiber, songwriter (Leiber & Stoller)
- Apr 26 Carol Burnett, American comedian and actress (Annie, 4 Seasons), born in San Antonio, Texas
- Apr 26 Filiberto Ojeda Ríos, Puerto Rican activist (d. 2005)
- Apr 28 Karl Heinz Wahren, composer
- Apr 28 Oliver "Bops Junior" Jackson, drummer
- Apr 29 Darijan Božič, Slovenian composer and conductor, born in Slavonski Brod, Kingdom of Yugoslavia
- Apr 29 Keith Baxter, Welsh actor (Chimes at Midnight, Killing Time, Barretts at Wimpole Street), born in Newport, Monmouthshire
- Apr 29 Raymond Hill, American tenor saxophonist (Kings of Rhythm), born in Clarksdale, Mississippi (d. 1996)
- Apr 29 Rodney "Rod" McKuen, American poet, singer-songwriter and actor (Jean, Alone, Beatsville), born in Oakland, California (d. 2015)
Willie Nelson
Apr 29 Willie Nelson, American country singer (On the Road Again), born in Abbott, Texas
Willie Nelson