The Blue Angel
Apr 1 "The Blue Angel" starring Marlene Dietrich in her breakthrough role premieres in Germany
Jones' 13 Stroke Win
Apr 1 American golfer Bobby Jones starts his Grand Slam season by winning the Southeastern Open by 13 strokes over Horton Smith at the Forest Hills-Ricker Golf Course in Atlanta, Georgia
- Apr 1 Chicago Cubs catcher Leo Hartnett breaks the altitude record for a catch by gloving a baseball dropped from the Goodyear blimp 800 feet over Los Angeles, California
- Apr 2 1st NY-Bermuda airplane flight lands in Bermuda
Haile Selassie
Apr 2 Ras Tafari Makonnen proclaimed Emperor Haile Selassie of Abyssinia (Ethiopia)
2nd Academy Awards
Apr 3 2nd Academy Awards: "The Broadway Melody", Warner Baxter & Mary Pickford win. First time Academy Awards are broadcast on the radio.
Montreal Canadiens vs Boston Bruins
Apr 3 Stanley Cup Final, Montreal Forum, Montreal, Quebec: Montreal Canadiens beat Boston Bruins, 4-3 for a 2-0 series sweep and their 3rd Championship
- Apr 4 England cricket batsman Andy Sandham ends Day 2 of 4th Test against West Indies in Kingston, Jamaica unbeaten on 309; 1st triple century in Test history; out for 325
- Apr 4 Les Ames makes the 1st Test Cricket century by a wicketkeeper (149)
- Apr 4 The Communist Party of Panama is founded
- Apr 5 England cricketers dismissed for then record 849 v West Indies in 4th Test in Kingston, Jamaica; Andy Sandham out for 325
Salt March
Apr 5 Mahatma Gandhi and thousands of followers reach the sea at Dandi and boil seawater to make illegal salt, marking the end of his famous 200 mile (300km) protest march against the widely hated British salt tax
- Apr 6 1st transcontinental glider tow completed
- Apr 6 Hostess Twinkies invented by bakery executive James Dewar
Headley Forces Draw
Apr 10 Brilliant West Indian cricket batsman George Headley scores patient 223 in drawn 4th Test against England at Kingston, Jamaica
- Apr 10 Thiokol synthetic rubber 1st produced in Yardley, New Jersey
- Apr 12 4th Test Cricket WI v England ends in a draw after nine days
- Apr 12 Wilfred Rhodes ends Test Cricket career aged 52 years 165 days
- Apr 14 Philip Barry's play "Hotel Universe" premieres in NYC
- Apr 17 Abkhazian ASSR forms in Georgian SSR
- Apr 17 DuPont scientist Elmer K. Bolton invents neoprene using Julius Nieuwland's divinyl acetylene
- Apr 18 Attempted raid on the armoury of police and auxiliary forces in Chittagong in Bengal province, British India by armed pro-independence revolutionaries led by Surya Sen popularly known as Master-da
- Apr 18 BBC news announcer announces "there is no news" at 20:45 news bulletin, plays music instead
All Quiet on the Western Front
Apr 21 "All Quiet on the Western Front" based on the novel by Erich Maria Remarque, directed by Lewis Milestone, starring Louis Wolheim and Lew Ayres premieres in Los Angeles (Academy Awards Outstanding Production 1930)
34th Boston Marathon
Apr 21 34th Boston Marathon won by Clarence DeMar in 2:34:48.2; his 7th victory in the event
- Apr 21 Fire at Ohio State Penitentiary kills 322
- Apr 22 British troops battle pro-independence revolutionaries in the Jalalabad hills near Chittagong, Bengal province, British India, 80 troops and 12 revolutionaries killed
- Apr 22 US, Britain & Japan sign London Naval Treaty
- Apr 27 White Sox 1st baseman Bud Clancy didn't handle ball at all in a 9 inning game vs St Louis Browns [1]
- Apr 28 1st night organized baseball game played in Independence, Kansas
- Apr 29 123 runs are scored in 7 major league games
- Apr 29 North Sea floodgate at Ijmuiden (biggest in world) officially opens
- Apr 29 Telephone connection Britain-Australia goes into service
Admirals
Aviators
Gangsters
Generals
Industrialists
Suffragists