- Apr 1 England cricket batsman Wally Hammond smashes 34 fours, 10 sixes in a Test record unbeaten 336 in the drawn 2nd Test against New Zealand in Auckland
Himmler Police Commander
Apr 1 Heinrich Himmler becomes Police Commander of Germany
- Apr 1 Nazi Germany begins persecution of Jews by boycotting Jewish businesses
- Apr 1 Scotland beats Ireland, 8-6 at Lansdowne Road, Dublin to win the Home Nations Rugby Championship and Triple Crown
- Apr 3 1st airplane flight over Mt Everest
- Apr 3 Then longest North American hockey game requires a 1:44:46 overtime as Maple Leaf Ken Doraty scores to beat Canadiens 1-0
- Apr 4 USS Akron dirigible crashes into Atlantic Ocean, off coast of New Jersey, in stormy weather; 73 die including US Navy Rear Admiral William A. Moffett - a major proponent of the airship fleet, there were 3 survivors [1]
- Apr 7 'National Beer Day" Cullen-Harrison act comes into effect legalising sale of low alcohol beer
- Apr 7 1st 2 NAZI anti-Jewish laws, bars Jews from legal & public service
- Apr 7 University Bridge, Seattle opens for traffic
- Apr 8 Manchester Guardian warns of unknown Nazi terror
Goering Premier of Prussia
Apr 11 Hermann Goering becomes Premier of Prussia
Stanley Cup Final
Apr 13 Stanley Cup Final, Maple Leaf Gardens, Toronto, ON: New York Rangers beat Toronto Maple Leafs, 1-0 in OT for a 3-1 series win; first best-of-4 Finals series
- Apr 17 37th Boston Marathon won by Leslie Pawson in 2:31:01.6
- Apr 17 Chicago Bears win their 1st NFL Game beating NY Giants 23-21
Heidegger Elected Rector
Apr 21 German philosopher Martin Heidegger elected rector of University of Freiburg
- Apr 22 Dutch government forbids left wing radio address
- Apr 23 Dovo soccer team forms in Veenendaal
- Apr 25 NY Yankee Russ Van Atta shuts out Washington Senators 16-0
- Apr 25 Philadelphia Phillies' Dick Bartell is 1st MLB player to get 4 consecutive doubles in 9 innings
- Apr 26 Jewish students are barred from school in Germany
- Apr 27 Adolf Hitler authorizes creation of Ministry of Aviation, in part to revive the German Luftwaffe, under Reichsmarshall Hermann Goering
- Apr 27 Jessop & Son department store in Nottingham, England, acquired by John Lewis Partnership. The partnership's first shop outside London.
- Apr 27 Karl Jansky reports reception of cosmic radio signal in Washington, D.C.
Admirals
Aviators
Gangsters
Generals
Industrialists
Suffragists