| 01 April
| | 1895.04.01 | Alberta Hunter | born
| | 1897.04.01 | Lucille Bogan | born
| | 1909.04.01 | Eddy Duchin | born
| | 1910.04.01 | Harry Carney | born
| | 1920.04.01 | John LaPorta | born
| | 1921.04.01 | Steve Race | born
| | 1922.04.01 | Duke Jordan | born
| | 1923.04.01 | Don Butterfield | born
| | 1925.04.01 | Kathy Stobart | born
| | 1927.04.01 | Amos Milburn | born
| | 1935.04.01 | Alan Haven | born
| | 1935.04.01 | Jorge Lopez Ruiz | born
| | 1944.04.01 | Bobby Gebert | born
| | 1947.04.01 | Frank Tusa | born
| | 1949.04.01 | Gil Scott-Heron | born
| | 1954.04.01 | Jeff Porcaro | born
| | 1963.04.01 | Antoine Roney | born
| | 02 April
| | 1892.04.02 | Roy Palmer | born
| | 1908.04.02 | Hakan Von Eichwald | born
| | 1909.04.02 | Hymie Shertzer | born
| | 1909.04.02 | Marty Marsala | born
| | 1911.04.02 | Ernie Cagnolatti | born
| | 1912.04.02 | Herbert Mills | born
| | 1916.04.02 | Oleg Lundstrem | born
| | 1918.04.02 | J.T. Brown | born
| | 1921.04.02 | Boomie Richman | born
| | 1926.04.02 | Max Greger | born
| | 1928.04.02 | Serge Gainsbourg | born
| | 1938.04.02 | Booker Little | born
| | 1943.04.02 | Larry Coryell | born
| | 1948.04.02 | Sal Nistico | born
| | 03 April
| | 1903.04.03 | Bubber Miley | born
| | 1906.04.03 | Billy Sr. Taylor | born
| | 1906.04.03 | Fats Pichon | born
| | 1910.04.03 | Homesick James Williamson | born
| | 1916.04.03 | Ken Kersey | born
| | 1917.04.03 | Bill Finegan | born
| | 1922.04.03 | Doris Day | born
| | 1928.04.03 | Bill Potts | born
| | 1936.04.03 | Harold Vick | born
| | 1936.04.03 | Jimmy McGriff | born
| | 1936.04.03 | Scott LaFaro | born
| | 1949.04.03 | Eric Kloss | born
| | 1951.04.03 | Mitch Woods | born
| | 1955.04.03 | John Mooney | born
| | 1957.04.03 | Paul Abler | born
| | 1958.04.03 | Martin Speake | born
| | 04 April
| | 1904.04.04 | Arne Hulphers | born
| | 1913.04.04 | Cecil Gant | born
| | 1913.04.04 | Gene Ramey | born
| | 1915.04.04 | Muddy Waters | born
| | 1921.04.04 | Lucy Reed | born
| | 1929.04.04 | Buster Cooper | born
| | 1931.04.04 | Jake Hanna | born
| | 1939.04.04 | Danny Thompson | born
| | 1939.04.04 | Hugh Masekela | born
| | 1945.04.04 | Ole Kock Hensen | born
| | 1947.04.04 | Ray Russell | born
| | 1954.04.04 | Michel Camilo | born
| | 1956.04.04 | Gary Smulyan | born
| | 05 April
| | 1900.04.05 | Herb Flemming | born
| | 1925.04.05 | Stan Levey | born
| | 1930.04.05 | Nabil Totah | born
| | 1932.04.05 | Billy Bland | born
| | 1932.04.05 | Ken Baldock | born
| | 1934.04.05 | Stanley Turrentine | born
| | 1944.04.05 | Evan Parker | born
| | 1948.04.05 | Hans Theessink | born
| | 1950.04.05 | Paul Oscher | born
| | 1953.04.05 | Jerome Harris | born
| | 1960.04.05 | Larry McCray | born
| | 06 April
| | 1902.04.06 | Filu | born
| | 1902.04.06 | Rosy McHargue | born
| | 1914.04.06 | Paul J. Ricci | born
| | 1917.04.06 | Big Walter Horton | born
| | 1924.04.06 | Charlie Rouse | born
| | 1924.04.06 | Dorothy Donegan | born
| | 1926.04.06 | Randy Weston | born
| | 1927.04.06 | Gerry Mulligan | born
| | 1928.04.06 | Bob Efford | born
| | 1928.04.06 | Eddie Hubble | born
| | 1929.04.06 | Andre Previn | born
| | 1929.04.06 | Art Taylor | born
| | 1931.04.06 | Gerard Badini | born
| | 1933.04.06 | Bill Hardman | born
| | 1934.04.06 | Horace Tapscott | born
| | 1936.04.06 | Manfred Schoof | born
| | 1937.04.06 | Gene Bertoncini | born
| | 1943.04.06 | Gerry Niewood | born
| | 1943.04.06 | Noah Howard | born
| | 1960.04.06 | John Pizzarelli | born
| | 07 April
| | 1897.04.07 | Isaiah Morgan | born
| | 1915.04.07 | Billie Holiday | born
| | 1918.04.07 | Johnny Simmen | born
| | 1918.04.07 | Peanuts Hucko | born
| | 1919.04.07 | Ralph Flanagan | born
| | 1921.04.07 | Al Hayse | born
| | 1922.04.07 | Mongo Santamaria | born
| | 1934.04.07 | Victor Feldman | born
| | 1938.04.07 | Alexander von Schlippenbach | born
| | 1938.04.07 | Freddie Hubbard | born
| | 1938.04.07 | Pete LaRoca | born
| | 1943.04.07 | Mick Abrahams | born
| | 1944.04.07 | Pat LaBarbera | born
| | 1951.04.07 | Bob Berg | born
| | 08 April
| | 1908.04.08 | Tommy McClennan | born
| | 1909.04.08 | George Dixon | born
| | 1922.04.08 | Carmen McRae | born
| | 1922.04.08 | Christian Bellest | born
| | 1928.04.08 | Derek Hogg | born
| | 1928.04.08 | Monty Sunshine | born
| | 1929.04.08 | Eiji Kitamura | born
| | 1933.04.08 | Paul Jeffrey | born
| | 1943.04.08 | Phil Lee | born
| | 09 April
| | 1894.04.09 | Clement Doucet | born
| | 1894.04.09 | Edmund Thornton Jenkins | born
| | 1895.04.09 | Mance Lipscomb | born
| | 1899.04.09 | Arthur Briggs | born
| | 1902.04.09 | Sharkey Bonano | born
| | 1905.04.09 | Teddy Roy | born
| | 1916.04.09 | Julian Dash | born
| | 1920.04.09 | Art Van Damme | born
| | 1935.04.09 | Reuben Wilson | born
| | 1938.04.09 | Rockin' Sidney | born
| | 1941.04.09 | Al Gafa | born
| | 1945.04.09 | Steve Gadd | born
| | 1956.04.09 | Michael Hashim | born
| | 1957.04.09 | Toshiyuki Honda | born
| | 10 April
| | 1894.04.10 | Fess Williams | born
| | 1906.04.10 | Fud Livingston | born
| | 1906.04.10 | Kai Ewans | born
| | 1917.04.10 | Morty Corb | born
| | 1922.04.10 | John Brim | born
| | 1927.04.10 | George Freeman | born
| | 1928.04.10 | Fraser MacPherson | born
| | 1928.04.10 | Jerzy Matuszkiewicz | born
| | 1929.04.10 | Barbara Lea | born
| | 1930.04.10 | Claude Bolling | born
| | 1930.04.10 | Ray Agee | born
| | 1938.04.10 | Denny Zeitlin | born
| | 1959.04.10 | Brian Setzer | born
| | 1971.04.10 | Joey Defrancesco | born
| | 11 April
| | 1889.04.11 | Nick LaRocca | born
| | 1912.04.11 | John O. Levy | born
| | 1913.04.11 | John Lee Granderson | born
| | 1918.04.11 | Jimmy Lewis | born
| | 1925.04.11 | Emil Mangelsdorff | born
| | 1939.04.11 | Luther 'Guitar Jr.' Johnson | born
| | 1946.04.11 | Anita Gravine | born
| | 12 April
| | 1892.04.12 | Johnny Dodds | born
| | 1909.04.12 | Lionel Hampton | born
| | 1911.04.12 | Tullio Mobiglia | born
| | 1915.04.12 | Hound Dog Taylor | born
| | 1916.04.12 | Russell Garcia | born
| | 1917.04.12 | Helen Forrest | born
| | 1921.04.12 | Shakey Jake Harris | born
| | 1928.04.12 | Tommy Turrentine | born
| | 1940.04.12 | Herbie Hancock | born
| | 1951.04.12 | Marty Krystall | born
| | 1973.04.12 | Ryan Kisor | born
| | 13 April
| | 1902.04.13 | Del Porter | born
| | 1906.04.13 | Bud Freeman | born
| | 1907.04.13 | Slick Jones | born
| | 1921.04.13 | Frank Emilio | born
| | 1922.04.13 | Roy Dunn | born
| | 1928.04.13 | Mike Daniels | born
| | 1928.04.13 | Teddy Charles | born
| | 1932.04.13 | Rusty Jones | born
| | 1934.04.13 | Kirk Stuart | born
| | 1936.04.13 | Henryk Majewski | born
| | 1938.04.13 | Eddie Marshall | born
| | 14 April
| | 1915.04.14 | Jimmy Namaro | born
| | 1920.04.14 | Gil Fuller | born
| | 1924.04.14 | Shorty Rogers | born
| | 1925.04.14 | Bill (ii) Harris | born
| | 1925.04.14 | Gene Ammons | born
| | 1938.04.14 | Monty Waters | born
| | 1967.04.14 | Steve Davis | born
| | 15 April
| | 1894.04.15 | Bessie Smith | born
| | 1898.04.15 | Wingie Carpenter | born
| | 1905.04.15 | Bernard Addison | born
| | 1907.04.15 | Casper Reardon | born
| | 1927.04.15 | Charlie Smith | born
| | 1930.04.15 | Herb Pomeroy | born
| | 1930.04.15 | Richard Davis | born
| | 1930.04.15 | Sy Johnson | born
| | 1935.04.15 | Gene Cherico | born
| | 1936.04.15 | Frank Frost | born
| | 1955.04.15 | Jeff Golub | born
| | 1977.04.15 | Paul Booth | born
| | 16 April
| | 1885.04.16 | Alexandre Stellio | born
| | 1908.04.16 | Ray Ventura | born
| | 1910.04.16 | Boyce Brown | born
| | 1911.04.16 | Alton Purnell | born
| | 1916.04.16 | Joe Farreras | born
| | 1923.04.16 | Bennie Green | born
| | 1923.04.16 | Benny Green | born
| | 1924.04.16 | Henry Mancini | born
| | 1924.04.16 | Keith Ailer | born
| | 1928.04.16 | Walt Dickerson | born
| | 1929.04.16 | Roy Hamilton | born
| | 1930.04.16 | Herbie Mann | born
| | 1931.04.16 | Johnny Littlejohn | born
| | 1937.04.16 | Artie White | born
| | 1943.04.16 | Erling Kroner | born
| | 1945.04.16 | Stefan Grossman | born
| | 1952.04.16 | Jukka Tolonen | born
| | 1964.04.16 | Esbjorn Svensson | born
| | 1967.04.16 | Junko Onishi | born
| | 17 April
| | 1890.04.17 | Johnny Saint Cyr | born
| | 1901.04.17 | Clifford Gibson | born
| | 1909.04.17 | Russell Bowles | born
| | 1922.04.17 | Paul Smith | born
| | 1928.04.17 | Jimmy Nelson | born
| | 1929.04.17 | James Last | born
| | 1930.04.17 | Chris Barber | born
| | 1930.04.17 | Sam Noto | born
| | 1932.04.17 | Art Ellefson | born
| | 1932.04.17 | Joe Romano | born
| | 1933.04.17 | Byther Smith | born
| | 1934.04.17 | Warren Chiasson | born
| | 1942.04.17 | Buster Williams | born
| | 1942.04.17 | Han Bennink | born
| | 1948.04.17 | Jan Hammer | born
| | 1956.04.17 | Lonnie Shields | born
| | 1973.04.17 | Moses Taiwa Molelekwa | born
| | 18 April
| | 1906.04.18 | Little Brother Montgomery | born
| | 1924.04.18 | Clarence "Gatemouth" Brown | born
| | 1925.04.18 | Leo Parker | born
| | 1926.04.18 | Jimmy Rowser | born
| | 1928.04.18 | Ken Colyer | born
| | 1932.04.18 | Freddy Hill | born
| | 1938.04.18 | Hal Galper | born
| | 1939.04.18 | Gus Galbraith | born
| | 1953.04.18 | Danny Gottlieb | born
| | 19 April
| | 1905.04.19 | Tommy Benford | born
| | 1906.04.19 | Alex Hill | born
| | 1922.04.19 | Glauco Masetti | born
| | 1928.04.19 | Alexis Korner | born
| | 1935.04.19 | Dudley Moore | born
| | 1943.04.19 | Czeslaw Bartkowski | born
| | 1951.04.19 | Dick Pearce | born
| | 20 April
| | 1895.04.20 | Emile Christian | born
| | 1916.04.20 | Burt Bales | born
| | 1919.04.20 | Vera Auer | born
| | 1923.04.20 | Tito Puente | born
| | 1925.04.20 | Henri Renaud | born
| | 1926.04.20 | Cy Laurie | born
| | 1929.04.20 | Johnny Fuller | born
| | 1935.04.20 | Ran Blake | born
| | 1936.04.20 | Beaver Harris | born
| | 1936.04.20 | Billy James | born
| | 1936.04.20 | Sonny Brown | born
| | 1948.04.20 | Joe Bonner | born
| | 1958.04.20 | Gary Primich | born
| | 1971.04.20 | Avishai Cohen | born
| | 21 April
| | 1893.04.21 | Lorenzo Jnr Tio | born
| | 1904.04.21 | Leo Adde | born
| | 1908.04.21 | Alfred Lion | born
| | 1911.04.21 | Johnny Blowers | born
| | 1911.04.21 | Zilas Gorling | born
| | 1917.04.21 | Joe Dixon | born
| | 1922.04.21 | Mundell Lowe | born
| | 1925.04.21 | Sonny Berman | born
| | 1932.04.21 | Slide Hampton | born
| | 1933.04.21 | Ian Carr | born
| | 1935.04.21 | Pat Rebillot | born
| | 1941.04.21 | Harry Miller | born
| | 1942.04.21 | Alan Skidmore | born
| | 1944.04.21 | Paul Geremia | born
| | 1944.04.21 | Peter Kowald | born
| | 1947.04.21 | John Weider | born
| | 1948.04.21 | Pawel Jarzebski | born
| | 1959.04.21 | Roger Smith | born
| | 1969.04.21 | Keri Leigh | born
| | 22 April
| | 1908.04.22 | Kid Howard | born
| | 1919.04.22 | Bull Moose Jackson | born
| | 1920.04.22 | Buzzy Drootin | born
| | 1921.04.22 | Candido | born
| | 1922.04.22 | Charles Mingus | born
| | 1922.04.22 | Lou Stein | born
| | 1924.04.22 | George Harmonica Smith | born
| | 1935.04.22 | Paul Chambers | born
| | 1936.04.22 | Don Menza | born
| | 1936.04.22 | Nico Bunink | born
| | 1941.04.22 | Don Grusin | born
| | 1947.04.22 | Barry Guy | born
| | 1947.04.22 | Harvey Mason | born
| | 1948.04.22 | Jan Kaspersen | born
| | 1957.04.22 | James Armstrong | born
| | 1983.04.22 | Earl Hines | died
| | 23 April
| | 1894.04.23 | Charles "Cow Cow" Davenport | born
| | 1895.04.23 | Jimmie Noone | born
| | 1919.04.23 | Benny Harris | born
| | 1924.04.23 | Bobby Rosengarden | born
| | 1929.04.23 | Calvin Owens | born
| | 1929.04.23 | Len Barnard | born
| | 1930.04.23 | Michael Flagstad | born
| | 1935.04.23 | Bunky Green | born
| | 1940.04.23 | Pierre Courbois | born
| | 1947.04.23 | Alan Broadbent | born
| | 1952.04.23 | Narada Michael Walden | born
| | 1958.04.23 | Kendra Shank | born
| | 1959.04.23 | Thilo Berg | born
| | 1984.04.23 | Red Garland | died
| | 24 April
| | 1902.04.24 | Rube Bloom | born
| | 1922.04.24 | Aaron Bell | born
| | 1927.04.24 | Fatty George | born
| | 1928.04.24 | Johnny Griffin | born
| | 1930.04.24 | Frank Strazzeri | born
| | 1937.04.24 | Joe Henderson | born
| | 1937.04.24 | Spanky De Brest | born
| | 1942.04.24 | Barbra Streisand | born
| | 1945.04.24 | Collin Walcott | born
| | 1946.04.24 | Stafford James | born
| | 2001.04.24 | Albert Hibbler | died
| | 25 April
| | 1913.04.25 | Earl Bostic | born
| | 1913.04.25 | George Johnson | born
| | 1923.04.25 | Albert King | born
| | 1928.04.25 | Rick Henderson | born
| | 1928.04.25 | Vassar Clements | born
| | 1932.04.25 | Willis "Gator" Jackson | born
| | 1946.04.25 | Digby Fairweather | born
| | 1950.04.25 | Bobbi Humphrey | born
| | 1961.04.25 | Carl Allen | born
| | 26 April
| | 1886.04.26 | Ma Rainey | born
| | 1907.04.26 | Dave Tough | born
| | 1913.04.26 | Karl George | born
| | 1915.04.26 | Johnny Shines | born
| | 1921.04.26 | Jimmy Giuffre | born
| | 1921.04.26 | Preston Love | born
| | 1924.04.26 | Teddy Edwards | born
| | 1926.04.26 | J.B. Hutto | born
| | 1928.04.26 | Herman Foster | born
| | 1941.04.26 | Claudine Clark | born
| | 1942.04.26 | Bill Byrne | born
| | 1944.04.26 | Rudiger Carl | born
| | 1950.04.26 | Lakshminarayana Shankar | born
| | 1964.04.26 | Axel Dorner | born
| | 1966.04.26 | Alessandro Galati | born
| | 27 April
| | 1907.04.27 | Matty Matlock | born
| | 1917.04.27 | Denzil De Costa Best | born
| | 1927.04.27 | Connie Kay | born
| | 1927.04.27 | Hop Wilson | born
| | 1927.04.27 | Sal Mosca | born
| | 1933.04.27 | Calvin Newborn | born
| | 1938.04.27 | Ruth Price | born
| | 1943.04.27 | Freddie Waits | born
| | 1959.04.27 | Scott Robinson | born
| | 1967.04.27 | Tommy Smith | born
| | 1999.04.27 | Alois Maxwell Hirt | died
| | 28 April
| | 1896.04.28 | George E. Lee | born
| | 1904.04.28 | Russ Morgan | born
| | 1910.04.28 | Everett Barksdale | born
| | 1911.04.28 | Mario Bauza | born
| | 1911.04.28 | Norma Teagarden | born
| | 1926.04.28 | Blossom Dearie | born
| | 1928.04.28 | Raymond Fol | born
| | 1933.04.28 | Oliver Jackson | born
| | 1936.04.28 | John Tchicai | born
| | 1940.04.28 | Phil Guy | born
| | 1941.04.28 | Mickey Tucker | born
| | 1947.04.28 | Glenn Zottola | born
| | 1947.04.28 | Steve Khan | born
| | 1950.04.28 | Lloyd Jones | born
| | 1954.04.28 | April Barrows | born
| | 29 April
| | 1899.04.29 | Duke Ellington | born
| | 1906.04.29 | Ward Pinkett | born
| | 1908.04.29 | Philippe Brun | born
| | 1909.04.29 | Jacques Butler | born
| | 1915.04.29 | Donald Mills | born
| | 1922.04.29 | Toots Thielemans | born
| | 1927.04.29 | Big Jay McNeely | born
| | 1928.04.29 | Errol Buddle | born
| | 1929.04.29 | Ray Barretto | born
| | 1930.04.29 | Claus Ogermann | born
| | 1931.04.29 | Lonnie Donegan | born
| | 1932.04.29 | Andy Simpkins | born
| | 1934.04.29 | Otis Rush | born
| | 1937.04.29 | Lefty Dizz | born
| | 1940.04.29 | George Adams | born
| | 1941.04.29 | Frankie Lee | born
| | 1942.04.29 | Sammy Rimington | born
| | 1952.04.29 | Dave Valentin | born
| | 1965.04.29 | Jody Sandhaus | born
| | 30 April
| | 1887.04.30 | Lawrence Duhe | born
| | 1896.04.30 | Reverend Gary Davis | born
| | 1906.04.30 | Hayes Pillars | born
| | 1917.04.30 | Frankie Lee Sims | born
| | 1923.04.30 | Percy Heath | born
| | 1930.04.30 | Bobby Marchan | born
| | 1931.04.30 | Jimmy Lee Robinson | born
| | 1931.04.30 | Richard Twardzik | born
| | 1947.04.30 | Abdul Wadud | born
| | 1960.04.30 | Rodney Kendrick | born
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