- Jul 4 Tibor Varga, Hungarian violinist and orchestra leader (Ripley's Game), born in Győr, Hungary (d. 2003)
- Jul 7 Stanislaw Wislocki, Polish conductor of classical music, born in Rzeszów, Poland (d. 1998)
- Jul 10 Revaz Il'yich Lagidze, Georgian composer (Tbiliso), born in Baghdati (d. 1981)
- Jul 13 Charles Scribner Jr, music publisher (Scribner)
- Jul 13 Ernest Gold [Goldner], Austrian-born American film composer (Exodus), born in Vienna (d. 1999)
- Jul 13 Git Gay [Birgit Carp], Swedish revue director, actress and singer (Git Gay Show, Ge mig en lektion i kärlek), born in Karlshamn, Sweden (d. 2007)
- Jul 15 Jack Hamilton Beeson, composer
- Jul 17 George Barnes, Chicago Hgts, guitarist (Skip Farrell Show)
- Jul 21 Billy Taylor, American jazz pianist (Birdland), orchestra leader (David Frost Show), and broadcaster (NPR), born in Greenville, North Carolina (d. 2010) [1]
- Jul 23 Jerome Rosen, American composer and educator, born in Boston, Massachusetts (d. 2011)
- Jul 24 Giuseppe Di Stefano, Italian operatic tenor, born in Motta Sant'Anastasia, Catania, Sicily (d. 2008)
- Jul 30 Grant Johannesen, American concert pianist, born in Salt Lake City, Utah (d. 2005)
About July 1921
How Old? 99 years old
Generation: Greatest Generation
Leap Year: No