James F. Byrnes (1879-1972)
May 2 American politician and statesman influential in domestic and foreign policy in the mid-1940s, born in Charleston, South Carolina
- May 2 Nannie Helen Burroughs, American educator and civil rights activist (founded National Training School for Women and Girls), born in Orange, Virginia (d. 1961)
- May 3 Fergus McMaster, Australian businessman and aviation pioneer (Qantas), born in Morinish, Queensland (d. 1950)
- May 6 Bedřich Hrozný, Czech orientalist and linguist (development of Hittitology), born in Lysá nad Labem, Bohemia, Austria-Hungary (d. 1952)
- May 6 Tobias Norlind, Swedish musicologist, born in Vellinge, Sweden (d. 1947)
- May 10 Symon Petliura, Ukrainian socialist leader (pogroms), born in Poltava, Ukraine, Russian Empire (d. 1926)
Nancy Astor (1879-1964)
May 19 American born British politician, 1st female MP in UK House of Commons, born in Danville, Virginia
- May 22 Alla Nazimova, Ukrainian-born actress, scriptwriter, and producer (Blood and Sand), born in Yalta, Taurida Governorate, Russian Empire (d. 1945)
- May 22 Eastwood Lane, American composer, born in Brewerton, New York (d. 1951)
- May 22 Jean Cras, French composer, born in Brest, France (d. 1932)
- May 22 Warwick Armstrong, Australian cricketer (Big Ship Great Aussie skipper 1920-21), born in Kyneton, Australia (d. 1947)
- May 23 Dezső Lauber, Hungarian sportsman (d. 1966)
- May 24 H. B. Reese, American inventor of Reese's, born in York County, Pennsylvania (d. 1956)
- May 25 William Maxwell Aitken, Lord Beaverbrook, Canadian English newspaper publisher (Daily Express), born in Maple, Ontario (d. 1964)
- May 27 Hans Lammers, German SS officer and Nazi politician, born in Lublinitz, Silesia, Prussia, German Empire (d. 1962)
- May 27 Lucile Watson, Canadian actress (Great Lie, Watch on the Rhine, Let's Dance), born in Québec, Canada (d. 1962)
- May 28 Milutin Milanković, Serbian astronomer and geophysicist (linked long-term changes in climate to astronomical factors affecting the amount of solar energy received at Earth’s surface), born in Dalj, Austria-Hungary (d. 1958)
- May 30 Colin Blythe, English cricketer (outstanding slow lefty pre-WWI), born in Deptford (d. 1917)
- May 31 Mark Hambourg, Russian-British composer, born in Boguchar, Russia (d. 1960)