1914 1915 1916 - 1917 - 1918 1919 1920
1880s 1890s 1900s - 1910s - 1920s 1930s 1940s
Events of 1917
- January 1 - The Oregon Ducks defeated the Penn Quakers 14-0 in the third Rose Bowl.
- January 2 - The Royal Bank of Canada takes over Quebec Bank.
- January 11 - Kingsland Explosion at Kingsland, NJ (now Lyndhurst, NJ) Due to German sabotage, leading to the U.S. involvement in World War I.
- January 19 - Silvertown explosion: a blast at a munitions factory in London kills 73 and injures over 400. The resulting fire causes over £2,000,000 worth of damage.
- January 22 - World War I: President Woodrow Wilson calls for "peace without victory" in Europe.
- January 25
- The Danish West Indies is sold to the United States for $25 million
- Anti-prostitution drive in San Francisco attracts huge crowds to public meetings. At one meeting attended by 7000 people, 20000 are kept out for lack of room. In a conference with Rev. Paul Smith, an outspoken foe of prostitution, 300 prostitutes make a plea for toleration explaining they had been forced into the practice by poverty. When Smith asked if they will take other work at $8 to $10 a week, the ladies laugh derisively, which loses them public sympathy. The police close about 200 houses of prostitution shortly thereafter 
- January 26 - The sea defences at the English village of Hallsands are breached, leading to all but one of the houses becoming uninhabitable.
- January 28 - The United States ends its search for Pancho Villa.
- January 30 - Pershing's troops in Mexico begin to withdraw to USA. They reach Columbus, Ohio February 5
- January 31 - World War I: Germany announces its U-boats will engage in unrestricted submarine warfare.
- February 3 - World War I: The United States breaks off diplomatic relations with Germany.
- February 5 - The constitution of Mexico is adopted.
- February 13 - Mata Hari is arrested for spying.
- February 23 - First International Women's day (Russia)
- February 24 - World War I: United States ambassador to the United Kingdom Walter H. Page is given the Zimmermann Telegram, in which Germany offers to give the American Southwest back to Mexico, if Mexico will declare war on the United States.
- March 1
- March 2 - The enactment of the Jones Act grants Puerto Ricans United States citizenship.
- March 4
- March 8
- March 10 - The Province of Batangas was formally founded as one of the Philippines' first encomienda.
- March 11 - Mexican Revolution - Venustiano Carranza elected president of Mexico - USA gives recognition of his government de jure
- March 15 (N.S.) (March 2, O.S.) - Tsar Nicholas II of Russia abdicates his throne for his son.
- March 17 (N.S.) (March 4, O.S.) - Grand Duke Michael refuses the throne and power in Russia passes to the newly-formed Provisional Government under Prince Georgy Lvov.
- March 21 - The Danish West Indies become the Virgin Islands when Denmark transfers control over the islands to the United States after the purchase of the islands on January 25.
- March 25 - The Georgian Orthodox Church restores its autocephaly abolished by Imperial Russia in 1811.
- March 26 - World War I: First Battle of Gaza - British cavalry troops retreat after 17,000 Turks block their advance.
- March 31 - The United States takes possession of the Virgin Islands after paying $25 million to Denmark.
- April 2 - World War I: US President Woodrow Wilson asks U.S. Congress for a declaration of war on Germany.
- April 6 - World War I: United States declares war on Germany.
- April 9-April 12 - World War I: Canadian troops win the Battle of Vimy Ridge.
- April 10 - Ammunition factory explodes in Chester, Pennsylvania - 133 dead.
- April 11 - World War I: Brazil severs relations with Germany.
- April 16
- April 19 - The Second Battle of Gaza, a fiasco for the British, causes the dismissal of the commander of the Eastern Expeditionary Force, General Archibald Murray.
- May 9 - The Nivelle Offensive was abandoned.
- May 13
- May 18 - World War I: The Selective Service Act passes the U.S. Congress giving the President the power of conscription.
- May 21 - Over 300 acres (73 blocks) destroyed in Great Atlanta fire of 1917.
- May 26 - Tornado strikes Mattoon, Illinois causing devastation and killing 101 people.
- May 27 - Over 30.000 French troops refuse to go to the trenches in Missy-aux-Bois.
- June 1 - French infantry regiment seizes Missy-aux-Bois and declares anti-war military government. French army soon apprehend them.
- June 4 - The very first Pulitzer Prizes are awarded: Laura E. Richards, Maud Howe Elliott, and Florence Hall receive the first Pulitzer for a biography (for Julia Ward Howe). Jean Jules Jusserand receives the first Pulitzer for history for his work With Americans of Past and Present Days. Herbert Bayard Swope receives the first Pulitzer for journalism for his work for the New York World.
- June 5 - World War I: Conscription begins in the United States as "Army registration day."
- June 13 - World War I: First major German bombing raid on London left 162 dead and 432 injured
- June 15 - The United States enacts the Espionage Act.
- July 1 - Labor Dispute ignites a Race Riot in East St. Louis, Illinois. Over 250 dead.
- July 6
- July 12 - Phelps Dodge Corporation deports over 1000 suspected IWW members from Bisbee, Arizona.
- July 17 - King George V of the United Kingdom issues a Proclamation stating that the male line descendants of the British Royal Family will bear the surname Windsor.
- July 20
- July 25 - Sir Thomas Whyte introduces the first income tax in Canada as a "temporary" measure (lowest bracket is 4% and highest is 25%).
- July 28 - The Silent Protest was organized by the NAACP in New York to protest the East St. Louis Massacre of July 2, as well as lynchings in Texas and Tennessee.
- August - The Green Corn Rebellion, an uprising by several hundred farmers against the World War I draft, takes place in central Oklahoma.
- August 2 - Squadron Commander E.H. Dunning lands his aircraft on the ship HMS Furious in Scapa Flow, Orkney. He was killed five days later during another landing on the ship.
- August 3 - New York Guard founded.
- August 10 - General strike in Spain begins, smashed after three days with 70 left dead, hundreds of wounded and 2000 prisoners.
- August 17 - One of English literature's important meetings takes place when Wilfred Owen introduces himself to Siegfried Sassoon at Craiglockhart War Hospital in Edinburgh.
- August 18 - A Great Fire in Thessaloniki, Greece, destroys 32% of the city leaving 70,000 individuals homeless.
- August 29 - World War I: The Military Service Act is passed in the Canadian House of Commons giving the Government of Canada the right to conscript men into the army.
- October 15 - World War I: At Vincennes outside of Paris, Dutch dancer Mata Hari is executed by firing squad for spying for Germany.
- October 19 - Love Field in Dallas, Texas is opened.
- October 25 - Traditional date of coup d'etat that began the Bolshevik Revolution.
- October 26 - World War I: Brazil declared in state of war with Central Powers.
- November 2 - Zionism: The Balfour Declaration proclaims British support for the "establishment in Palestine of a national home for the Jewish people" with the clear understanding "that nothing shall be done which may prejudice the civil and religious rights of existing non-Jewish communities".
- November 6 - World War I: Third Battle of Ypres ends: After three months of fierce fighting, Canadian forces take Passchendaele in Belgium.
- November 7
- October Revolution begins: The workers of St. Petersburg in Russia, led by the Bolshevik leader Vladimir Lenin, attacked the Kerensky Provisional Government ( Julian Calendar shows an October 25 date).
- The Safavid Empire of Persia (which provided weapons for Russia) refuses to support the Allied Forces after the October Revolution.
- World War I: Third Battle of Gaza ends - United Kingdom forces capture Gaza from the Ottoman Empire.
- November 15 - Finland takes a step towards full sovereignty, ending the personal union with Russia.
- November 18 - Sigma Alpha Rho, Jewish high school fraternity, is founded in West Philadelphia, Pennsylvania
- November 20
- November 22 - In Montreal, Canada, the National Hockey Association breaks up.
- November 23 - Bolsheviks release the full text of the previously secret Sykes-Picot Agreement in Izvestia and Pravda; it is subsequently printed in the Manchester Guardian on November 26.
- November 24 - In Milwaukee, Wisconsin, nine members of the Milwaukee Police Department are killed by a bomb, the most fatal single event in U.S. police history until the September 11, 2001 attacks.
- November 26 - The National Hockey League is formed as a replacement.
- November 29 - Striking coal miners at Rostov declare Don Republic - it lasts two weeks.
- December 3 - After nearly 20 years of planning and construction, the Quebec Bridge opens to traffic (the bridge partially collapsed on August 29 1907 and September 11 1916).
- December 6
- Finland's declaration of independence.
- Halifax Explosion: Two freighters collide in Halifax Harbour at Halifax Nova Scotia and cause a huge explosion that kills at least 1963 people, injures 9000 and destroys part of the city. Until Hiroshima, this was the biggest manmade explosion in recorded history.
- December 11 - British troops take Jerusalem from the troops of the Ottoman Empire
- December 25 - Why Marry?, first dramatic play to win a Pulitzer Prize, opens at the Astor Theatre in New York City.
- December 26 - United States president Woodrow Wilson uses the Federal Possession and Control Act to place most U.S. railroads under the United States Railroad Administration, hoping to more efficiently transport troops and materials for the war effort.
- September 11 - Ferdinand Marcos, President of the Philippines (d. 1989)
- September 18 - Francis Parker Yockey, author of Imperium (d. 1960)
- November 19 - Indira Gandhi, Prime Minister of India (d. 1984)
- February 5 - Edouard Drumont, anti-semitic French journalist (b. 1844)
- March 8 - Ferdinand von Zeppelin, German aircraft manufacturer (b. 1838)
- L'Osservatore Romano, Weekly Edition in English, 12/19 August 1998, page 9