- Jun 1 Ernest Pingoud, Finnish composer, dies at 53
- Jun 1 Vladislav Vančura, Czech writer (Rozmarné léto), dies at 50
- Jun 2 (Roland) "Bunny" Berigan, American session and big band jazz trumpeter (Paul Whiteman; Benny Goodman - "King Porter Stomp"; Tommy Dorsey - "Marie"), vocalist, and bandleader ("I Can't Get Started"), dies from cirrhosis of the liver at 33
Reinhard Heydrich (1904-1942)
Jun 4 German Nazi leader (head of Bohemia and Moravia and the Reich Main Security Office), dies a week after an assassination attempt at 38
- Jun 7 Alan Blumlein, English electronics engineer, dies at 38
- Jun 10 Jean François van Royen, Dutch graphic designer, bibliophile, and Secretary-General of Dutch PTT (Post, Telephone & Telegraph), dies in Concentration Camp Amersfoort at 63
- Jun 10 Ross Gregory, Australian cricket batsman (2 Tests, 2 x 50; Victoria), dies in action during WWII at 26
- Jun 10 Stanley Lupino, English comic (Cheer Up; Over She Goes), dies at 48
- Jun 12 Walter Leigh, British composer (The Frogs of Aristophanes), killed in action near Tobruk, Libya while serving in British Army, at 36
- Jun 15 Vera Figner, writer, dies
- Jun 17 Charles Fitzpatrick, Canadian politician who was the 12th Lieutenant Governor of Quebec and 5th Chief Justice of Canada, dies at 88
- Jun 18 Adolf Opalka, Czech resistance fighter, shot down
- Jun 18 Arthur Pryor, American band composer and trombone player, dies at 71
- Jun 18 Jan Kubiš, Czech paratrooper in WWII (killed Nazi head of Bohemia Reinhard Heydrich in Operation Anthropoid), dies in action at 28
- Jun 18 John Kubris, Czech paratrooper in WWII (killed Nazi head of Bohemia Reinhard Heydrich in Operation Anthropoid), dies as the result of battle wounds at 28
- Jun 25 Hans Lietzman, German theologist and church historian, dies at 67
- Jun 30 Arnoldus Johannes Hubertus Aerts, Dutch bishop of New Guinea, executed at 62
Assassination
Drug Overdose
Gunshot Wound
Murder
Plane Crash
Suicide