was a leap year starting on Monday of the Gregorian calendar, the 1940th year of the Common Era (CE) and Anno Domini (AD) designations, the 940th year of the 2nd millennium, the 40th year of the 20th century, and 1 in the 1940s. The 1940 denomination for this year has been in use since the early Medieval period, when the Anno Domini (A.D.) calendar era became the common method in Europe for naming years.
Visman Commission formed
11 May - Allies enter Belgium
May 15 - Nazis take over Netherlands
May 28 - Nazis invade Belgium
June 14 - German troops enter Paris during World War II.
June 25 - France formally surrenders to Nazi Germany.
September 22 - Imperial Japan begins an invasion of Vichy French rule in Indochina
September 27 - Treaty of the Axis of Fascists
October 7 - Nazis take Romania
October 28 - Italy invades Greece
January 28 - Carlos Slim Helú, Mexican entrepreneur and philanthropist
April 25 - Al Pacino, American actor
June 22 - Abbas Kiarostami, Iranian director (d. 2016)
7 September - Abdurrahman Wahid, President of Indonesia 1999-2001 (d. 2009)
Bruce Lee - Actor, Chinese Martial Arts
August 21 - Lev Trotski, Russian revolutionary (b. 1879)
October 8 - Robert Emden, Swiss physicist and meteorologist (b. 1862)
December 21 - F. Scott Fitzgerald, United States (b. 1896)