- May 2 Georgi Dimitrov, Bulgarian composer, born in Belogradchik, Bulgaria (d. 1979)
- May 4 Umm Kulthum [Ibrahim], Egyptian singer and actress, born in Tummāy al-Zahāyrah, Egypt (d. 1975)
Fats Waller
May 21 Fats Waller [Thomas Wright], American jazz singer and composer (Ain't Misbehavin', Hot Chocolate), born in NYC, New York (d. 1943)
Fats Waller
- May 25 Kurt Thomas, German composer, born in Tönning, Germany (d. 1973)
- May 26 George Formby, British singer and comedian, born in Wigan, Lancashire, England (d. 1961)
- May 26 Vlado Perlemuter, Lithuanian-French pianist, born in Kaunas, Lithuania (d. 2002)
- May 28 Shalva Mikhailovich Mshvelidze, Russian composer, born in Tiflis (d. 1984)
About May 1904
How Old? 116 years old
Generation: Greatest Generation
Leap Year: Yes