- Jun 1 Leslie Howard [Stainer], British actor (Gone With the Wind, Of Human Bondage), dies after Nazis shoot down his plane at 50
- Jun 1 Wilfrid B. Israel, Jewish activist
- Jun 2 Nile Kinnick Jr., American College Football Hall of Fame halfback (Heisman Trophy 1939; University of Iowa), dies during a WWII training flight at 24
- Jun 3 Folkert E Posthuma, Min of Agriculture, dies
- Jun 6 Karl Landsteiner, Austrian immunologist and pathologist (Nobel 1930), dies at 74
- Jun 8 (Wilford) "Min" Leibrook was an American jazz tuba player and bassist (Paul Whiteman Orchestra), dies of meningitis at 40
- Jun 11 Sam[uel] de Vries, actor (Boefje, In Sobibor), dies at 50
- Jun 13 Kočo Racin, Macedonian poet (b. 1908)
- Jun 15 Cecil Parkin, cricketer (32 wkts in 10 Tests for Eng 1920-24), dies
- Jun 26 Fritz Schmidt, German Commissioner-General for Political Affairs and Propaganda (Netherlands, 1940-43), commits suicide at 39