| January 1 | Communist uprising in West Java |
| January 1 | Dodgers announce release of future Hall of Fame Zack Wheat |
| January 5 | Fox Studios exhibits Movietone |
| January 5 | Judge Landis begins 3-day public hearing on charges that 4 games played between Chicago and Detroit in 1917 had been thrown to White Sox |
| January 6 | U.S. Marines sent to Nicaragua |
| January 7 | Commercial transatlantic telephone service inaugurated between New York and London |
| January 7 | Harlem Globetrotters play 1st game (Hinckley, Ill) |
| January 9 | Dmitri Shostakovich' Octet opus 11, premieres in Moscow |
| January 9 | Fire in Laurier Palace cinema in Montreal, 78 children died |
| January 10 | Fritz Lang's Metropolis premieres |
| January 11 | Royale Theater (Golden, CBS Radio Playhouse) opens at 242 W 45th New York City |
| January 13 | U.S. and Mexico battle over oil interests |
| January 14 | Toronto Maple Leafs 1st hat trick (Hap Day) vs New York Rangers |
| January 19 | British government decides to send troops to China |
| January 21 | 1st national opera broadcast from a U.S. opera house (Faust, Chicago) |
| January 26 | Maxwell Anderson's "Saturday's Children," premieres in New York City |
| January 27 | Harlem Globetrotters play their 1st game |
| January 28 | Serbian-Croatian-Slavic government of Oezonowitsj falls |
| January 29 | 4th German government of Marx forms |
| January 30 | Left wins national election in Thuringen |
| January 31 | International allies military command in Germany disbands |
| January 31 | NL President John Heydler rules Rogers Hornsby can't hold stock in the Cardinals and play for the Giants |
| February 2 | Harry Tierney/Joseph McCarthy's "Rio Rita," premieres in New York City |
| February 2 | Ziegfeld Theater (Loew's Ziegfeld) opens at 6th Ave and 54th St. New York City |
| February 3 | Uprising against regime of general Carmona in Portugal |
| February 4 | KGA-AM in Spokane WA begins radio transmissions |
| February 5 | Buster Keaton's movie "The General" released and bombed |
| February 8 | Belgian-Swiss treaty signed |
| February 10 | President Coolidge asks for 2nd disarmament conference |
| February 11 | U.S. Female Figure Skating championship won by Beatrix Loughran |
| February 11 | U.S. Male Figure Skating championship won by Nathaniel Niles |
| February 12 | British expeditionary army lands in Shanghai |
| February 13 | Uprising against Portuguese regime of General Carmona defeated |
| February 16 | Noel Coward's "Marquise," premieres in London |
| February 16 | U.S. restores diplomatic relations with Turkey |
| February 18 | 1st U.S. radio broadcast of "Cities Service Concerts" |
| February 18 | U.S. and Canada begin diplomatic relations |
| February 19 | General strike against British occupiers in Shanghai |
| February 20 | Golfers in South Carolina arrested for violating Sabbath |
| February 21 | Franz Lehr's opera "Zarewitsch," premieres |
| February 22 | ARC soccer team forms in Alphen on the Rhine |
| February 22 | Baruch Spinosa's house of mourning opened as a museum |
| February 23 | President Coolidge creates Federal Radio Commission (FCC) |
| February 24 | John Golden Theater (Theatre Masque) opens at 252 W 45th St. New York City |
| February 25 | Gdanks and Polish accord concerning traffic through Polish corridor |
| February 27 | For 2nd Sunday in a row golfers in South Carolina arrested for violating Sabbath |
| March 1 | Bank of Italy becomes a National Bank |
| March 2 | Babe Ruth becomes highest paid baseball player ($70,000 per year) |
| March 5 | 1,000 U.S. Marines land in China to protect American property |
| March 7 | Earthquake measuring 8 on Richter scale strikes Tango, Japan |
| March 8 | Pan American Airlines incorporates |
| March 10 | Albania mobilize by threat of Serbian, Croatian and Slovenes |
| March 10 | Bavaria lifts ban on Hitler's speeches |
| March 11 | 1st armored commercial car hold-up in U.S., Pittsburgh |
| March 11 | 1st golden gloves tournament |
| March 11 | Samuel Roxy Rothafel opens famous Roxy Theater (New York City) |
| March 17 | U.S. government doesn't sign league of Nations disarmament treaty |
| March 19 | Bloody battles between communists and nazis in Berlin |
| March 21 | Guomindang Army conquerors Shanghai as British marines flee |
| March 22 | Federico Garcia Lorca's "El Maleficio," premieres in Madrid |
| March 24 | Cuban chess champ, Jose Capablanca wins 33-day Grand Chess Tournie |
| March 24 | Dutch 1st Chamber condemns Belgian and Netherlands Wielingen Treaty |
| March 26 | Alfred Hugenberg purchases German film company UFA |
| March 26 | Gaumont-British Film Corporation forms |
| March 28 | Majestic Theater opens at 245 W 44th St. New York City |
| March 29 | Henry O D Seagrave races his Sunbeam to a record 203.79 mph at Daytona |
| April 1 | 1st automatic record changer introduced by His Master's Voice |
| April 3 | Interstate Commerce Commission transfers Ohio to Eastern time zone |
| April 5 | Johnny Weissmuller set records in 100 and 200 m free style |
| April 7 | Using phone lines TV is sent from Washington D.C. to New York City |
| April 9 | Italy and U.S. anarchists Sacco and Vanzetti given death sentences |
| April 11 | Chilean General Carlos Ibanez names himself president |
| April 12 | General Chiang Kai-shek begins counter revolution in Shanghai |
| April 13 | Stanley Cup: Ottawa Senators beat Boston Bruins, in 2 games and 2 ties |
| April 15 | Babe Ruth hits 1st of 60 home runs of season (off A's Howard Ehmke) |
| April 15 | Switzerland and U.S.S.R. agree to diplomatic relations |
| April 17 | Japan's Wakarsoeki government falls/Baron Tanaka becomes premier |
| April 18 | Chiang Kai-Shek forms anti-government in China |
| April 19 | 31st Boston Marathon won by Clarence DeMar of Mass in 2:40:22.2 |
| April 19 | "Vagabond King" opens in London |
| April 22 | 1st performance of Roger Sessions' Symphony in E |
| April 25 | Spain routes 20,000 soldiers to Morocco (uprising Rifkabylen) |
| April 29 | Construction of Spirit of St. Louis is completed |
| April 30 | Princess Juliana gets seat in Dutch Council of State |
| May 1 | 1st British airliner to serve cooked meals (Imperial Airways) |
| May 1 | Netherlands beats Belgium 3-2 in soccer match in Amsterdam |
| May 1 | Panningen soccer team forms in Panningen |
| May 2 | International Economic Conference (52 countries including U.S.S.R.) opens |
| May 2 | Pulitzer prize awarded to Louis Bromfield (Early Autumn) |
| May 4 | 1st balloon flight over 40,000 feet (Scott Field, Ill) |
| May 4 | Academy of Motion Picture Arts and Sciences forms |
| May 4 | Nicaragua agrees to a U.S. supervised presidential election in 1928 |
| May 5 | Dmitri Sjostakovitch' 1st Symphony, premieres in Berlin |
| May 7 | San Francisco Municipal Airport (Mills Field) dedicated |
| May 9 | 53rd Preakness: Whitey Abel aboard Bostonian wins in 2:01.6 |
| May 9 | Canberra replaces Melbourne as the capital of Australia |
| May 11 | Belgium beats England 9-1 in soccer |
| May 11 | Louis B. Mayer forms Academy of Motion Picture Arts and Sciences |
| May 13 | "Black Friday" on Berlin Stock Exchange |
| May 13 | VVOG soccer team forms in Harderwijk |
| May 14 | 53rd Kentucky Derby: Linus McAtee aboard Whiskery wins in 2:06 |
| May 14 | "Ain't She Sweet?" hits #1 on the pop singles chart by Ben Bernie |
| May 16 | New York Yankee Bob Meusel steals 2nd, 3rd and home |
| May 16 | Supreme Court ruled bootleggers must pay income tax |
| May 17 | Chicago Cubs beat Boston Braves, 4-3, in 22 innings |
| May 18 | Grauman's Chinese Theater opens in Hollywood California |
| May 18 | Ritz Hotel opens in Boston |
| May 18 | "Slide Lake" in Gros Ventre Wyoming collapses |
| May 20 | At 7:40 AM, Lindbergh takes off from New York to cross Atlantic for Paris |
| May 20 | Saudi Arabia becomes independent of Great Britain (Treaty of Jedda) |
| May 21 | Lindburgh lands in Paris, after 1st solo air crossing of Atlantic |
| May 22 | 8.3 earthquake strikes Nan-Shan China, 200,000 killed |
| May 22 | Dodgers beat Phillies, 20-4 |
| May 25 | Henry Ford stops producing Model T car (begins Model A) |
| May 26 | Ford Motor Company manufactures its 15 millionth Model T automobile |
| May 27 | Japanese military intervention in Chinese civil war |
| May 27 | Thomas Masaryk elected Czechoslovakia president |
| May 28 | Hammond scores his 1,000th cricket run of the season after 22 days |
| May 30 | Walter Johnson records 113th and last shutout of his career |
| May 31 | Ford Motor Company produces last "Tin Lizzie" (begins Model A) |
| May 31 | Tiger 1st baseman Johnny Neun makes an unassisted triple play |
| June 4 | 1st Ryder Cup: U.S. beats England, 9 -2 at Worcester CC Mass |
| June 4 | Johnny Weissmuller set swim records in 100-yard and 200-yard free-style |
| June 5 | 3rd French Mens Tennis: R Lacoste beats B Tilden (64 46 57 63 11-9) |
| June 5 | Johnny Weissmuller sets 100-yard and 200-yard free-style swim record |
| June 8 | Tony Lazzeri hits 3 home runs Yankees beat White Sox 12-11 |
| June 11 | 59th Belmont: Earl Sande aboard Chance Shot wins in 2:32.6 |
| June 11 | Babe Ruth hits 19th and 20th of 60 home runs |
| June 11 | Charles Lindbergh is awarded the 1st Distinguished Flying Cross |
| June 13 | Ticker-tape parade welcomed Charles Lindbergh to New York City |
| June 16 | 31st U.S. Golf Open: Tommy Armour shoots a 301 at Oakmont CC in Pa |
| June 18 | Paavo Nurmi runs world record 2000 m: 5:24.6 |
| June 23 | Lou Gehrig hits 3 home runs in 11-4 victory over Red Sox |
| June 25 | WVO soccer team forms in Oosterhout |
| June 26 | Comet 7P/Pons-Winnecke approaches within 0.0394 AUs of Earth |
| June 29 | 1st flight from West Coast arrives in Hawaii |
| June 30 | Augusto Cesar Sandino issues his Manifesto Politico |
| June 30 | U.S. Assay Office in Deadwood, South Dakota closes |
| July 2 | 40th Wimbledon Womens Tennis: Helen Moody beats L de Alvarez (62 64) |
| July 2 | Earthquake hits Palestine |
| July 3 | 47th Wimbledon Mens Tennis: H Cochet beats Borotra (46 46 63 64 75) |
| July 4 | Ir Sukarno forms PNI (Perserikatan Nasional Indonesia) in Batavia |
| July 9 | William T. Francis named minister to Liberia |
| July 12 | Babe Ruth hits 30th of 60 home runs |
| July 14 | 1st commercial airplane flight in Hawaii |
| July 15 | 62nd British Golf Open: Bobby Jones shoots a 285 at St. Andrews |
| July 16 | Augusto Sandino begins 5 -year war against U.S. occupation of Nicaragua |
| July 18 | Ty Cobb's 4,000th career hit |
| July 20 | Lindbergh begins New York flight (Spirit of St. Louis) |
| July 27 | Major Bernard Montgomery (29) marries widow Betty Carver |
| July 27 | Mel Ott, 18, hits his 1st league home run (inside the park) |
| July 29 | 1st iron lung installed, Bellevue hospital, New York |
| July 29 | Bellevue Hospital in New York installs 1st iron lung |
| July 29 | Phil Mead scores his 100th 100, Hampshire vs. Northants |
| August 1 | Earliest date for a film to be considered for the Academy Awards |
| August 4 | Peace Bridge between U.S. and Canada opens |
| August 5 | Phillies Cy Williams hits for cycle in just 4 at bats |
| August 7 | Peace Bridge between U.S. and Canada dedicated |
| August 7 | U.S. rum smuggler Horace Alderman kills 3 |
| August 12 | "Wings," the only silent film to win an Oscar for best picture, opens |
| August 16 | 1st home run hit out of Comiskey Park Chicago by New York Yankee Babe Ruth |
| August 21 | 4th Pan-African Congress meets (New York City) |
| August 22 | Babe Ruth hits 40th of 60 homers |
| August 27 | Parks College, America's oldest aviation school, opens |
| August 30 | 41st U.S. Womens Tennis: Helen Wills Moody beats Betty Nuthall (61 64) |
| September 2 | Rumour starts that Yankee Lou Gehrig will be traded to Tigers |
| September 4 | Charles Lindbergh visits Boise, Idaho, on his cross-country tour |
| September 5 | Red Sox beat Yankees 12-11 in 18 innings |
| September 6 | B. G. DeSylva/Lew Brown's musical "Good News," premieres in New York City |
| September 6 | Red Sox beat New York Yankees 12-11 in 18 innings at Fenway Park |
| September 7 | Philo Farnsworth demonstrates 1st use of TV in SF |
| September 9 | Tony Lazzeri Day at Yankee Stadium |
| September 10 | 22nd Davis Cup: France beats USA in Philadelphia (3-2) |
| September 11 | After losing 21 in a row to NY, the Browns win their last meeting, 6-2 |
| September 11 | Babe Ruth hits 50th of 60 homers |
| September 12 | Sigmund Romberg's musical "My Maryland," premieres in New York City |
| September 13 | Waite Hoyt became only 20 game winner of 1927 Yankees |
| September 13 | Yankees clinch pennant, Ruth hits 2 home runs (52 en route to 60) |
| September 16 | Rene Lacoste beats Bill Tilden for U.S. Lawn Tennis Association title |
| September 17 | 47th U.S. Mens Tennis: Rene Lacoste beats William T Tilden (119 63 119) |
| September 17 | Charles Lindbergh visits San Francisco |
| September 18 | 18 station CBS radio network begins, (WOR is New York City affiliate) |
| September 20 | New York Yankee Babe Ruth hits record 60th home run of season off Tom Zachry |
| September 22 | Famous "Long count" fight (Dempsey loses boxing title to Tunney) |
| September 22 | Gene Tunney beats Jack Dempsey in 10 for heavyweight boxing title |
| September 22 | Yankees Earle Coombs hits 3 triples |
| September 24 | NHL's Toronto St. Patricks become Maple Leafs |
| September 24 | Yankees set record of 106 victories |
| September 26 | St. James Theater (Erlanger) opens at 246 W 44th St. New York City |
| September 29 | Babe Ruth ties record by hitting grand slams in consecutive games |
| September 29 | Telephone service begins between U.S. and Mexico |
| September 29 | Tornado strikes St. Louis Missouri, 85 die |
| September 30 | Babe Ruth hits record setting 60th home run, off Tom Zachary |
| October 1 | Pirates clinch NL pennant with a 9-6 win over Reds |
| October 6 | "Jazz Singer," 1st movie with a sound track, premieres (New York City) |
| October 7 | Yank Herb Pennock retires 1st 22 Pirates in World Series game |
| October 8 | New York Yankees sweep Pirates in 24th World Series |
| October 8 | Sea battle at Navarino (Greece freed of Ottoman occupation) |
| October 11 | Lou Gehrig named AL MVP (Babe Ruth (former winner) not eligible) |
| October 12 | Hermann Gorner of Germany raises 24 men weighing 4,123 lbs on a plank with soles of his feet |
| October 17 | Ban Johnson, in failing health, retires as AL president |
| October 23 | Town of Netanya Israel founded by Nathan Strauss |
| October 27 | Queen Wilhelmina opens Meuse-Waal Canal in Nijmegen |
| October 28 | Josip Broz (Tito) begins 7 months jail sentence in Croatia |
| October 28 | KLM-plane "Homing Pigeon" leaves Netherlands-Indies after 1st regular flight |
| November 3 | 22.3 cm rainfall at Somerset, Vermont (state record) |
| November 3 | Rodgers and Hart's musical "Connecticut Yankee," premieres in New York City |
| November 3 | Tropical storm flooding kills 84 in Winooski River Valley (Vt) |
| November 5 | 10th PGA Championship: Water Hagen at Cedar Crest CC Dallas |
| November 5 | Walter Hagen beats Joe Turnesa for 4th consecutive PGA title |
| November 9 | Giant Panda discovered, China |
| November 9 | Pastor of Have begins blessing of motorcars/motors |
| November 12 | 1st underwater tunnel, Holland Tunnel connecting New York to New Jersey opens |
| November 12 | Notre Dame's Fighting Irish changes blue jerseys for green |
| November 12 | Trotsky expelled from Soviet CP; Stalin becomes undisputed dictator |
| November 13 | NY-New Jersey Holland Tunnel, 1st twin-tube underwater auto tunnel, opens |
| November 14 | Worlds largest gas tank in Pittsburgh Penn explodes; 28 die |
| November 17 | Tornado hits Washington D.C. |
| November 22 | 1st snowmobile patent granted to Carl Eliason (Sayner Wisc) |
| November 22 | George Gershwin's "Funny Face," premieres in New York City |
| November 22 | Neil Simon Theater (Alvin) opens at 250 W 52nd St. New York City |
| November 26 | 15th CFL Grey Cup: Toronto Balmy Beach defeats Hamilton Tigers, 9-6 |
| November 28 | J McHugh and D Fields' musical "Delmar's Revels," premieres in New York City |
| December 2 | 1st Model A Fords sold, for $385 |
| December 4 | Dmitri Shostakovich' 2nd Symphony, premieres in Moscow |
| December 4 | Duke Ellington opens at Cotton Club in Harlem |
| December 4 | Pirates Paul Waner wins NL MVP |
| December 10 | Grand Ole Opry makes its 1st radio broadcast, in Nashville, TN |
| December 14 | Iraq gains independence from Britain, but British troops remain |
| December 15 | Ed Hickman kidnaps child he later beheads |
| December 16 | Cricket 1st-class debut of Don Bradman, NSW vs. South Australia |
| December 17 | U.S. submarine 'S-4' sinks after collision kills all 34 aboard |
| December 17 | Victoria score 793 against Queensland, Bill Ponsford 437 |
| December 24 | Test Cricket debut of Walter Hammond, who scored 51 and took 5-36 vs. S Af |
| December 27 | Jerome Kern/Oscar Hammerstein II's "Show Boat," premieres in New York City |
| December 27 | Philip Barry's "Paris Bound," premieres in New York City |
| December 27 | Stalin's faction wins All-Union Congress in U.S.S.R., Trotsky expelled |
| December 28 | George Kaufman and Moss Hart's "Royal Family," premieres in New York City |
| December 30 | Japan dedicates 1st subway in Orient (route under 2 miles long) |
| December 31 | Ponsford scores 336 against SA, giving him 1146 for month |