- 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 Posthuma, Dutch Minister of Agriculture, assassinated at 69
Karl Landsteiner (1868-1943)
Jun 6 Austrian immunologist and pathologist (Nobel 1930 for the discovery of different blood groups), dies at 74
- Jun 8 (Wilford) "Min" Leibrook, American jazz tuba player and bassist (Paul Whiteman Orchestra), dies of meningitis at 40
- Jun 11 Sam de Vries, Dutch actor (Boefje; De man zonder hart), murdered in gas chamber at Sobibór concentration camp at 50
- Jun 13 Kočo Racin, Macedonian poet (b. 1908)
- Jun 15 Cecil "Cec" Parkin, British cricketer (32 wkts in 10 Tests for Eng 1920-24), and author (Cricket Reminiscences: Humorous and Otherwise), dies at 57
- Jun 26 Fritz Schmidt, German Commissioner-General for Political Affairs and Propaganda (Netherlands, 1940-43), commits suicide at 39
Assassination
Drug Overdose
Gunshot Wound
Murder
Plane Crash
Suicide