January–April
January 14: Earthquake in Jamaica.
January 6 – The first Montessori school and daycare center for working class children opens in Rome.
January 14 – An earthquake, in Kingston, Jamaica kills more than 1,000.
March – The 1907 Romanian Peasants' Revolt results in possibly as many as 11,000 deaths.
March 5 – At the opening of the new State Duma in St. Petersburg, Russia 40,000 demonstrators are dispersed by Russian troops.
March 15–March 16 – Elections to the new Parliament of Finland are the first in the world with woman candidates, as well as the first elections in Europe where universal suffrage is applied. Nineteen women are elected.
March 22 – The first taxicabs with taxi meters begin operating in London.
May–August
June 15 – The Second Hague Peace Conference opens at The Hague.
June 26 – Tiflis bank robbery: Bolsheviks attack a cash-filled bank coach in the centre of Tiflis, Georgia, killing forty people.
July 21 – The SS Columbia sinks after colliding with the lumber schooner San Pedro off Shelter Cove, California, U.S.A., resulting in 88 deaths.
July 24 – The Japan–Korea Treaty of 1907 brings the government and military of the protectorate of Korea more firmly under Japanese control.
August 1–9 – Robert Baden-Powell leads the first Scout camp on Brownsea Island, England.
August 29 – The partially completed superstructure of the Quebec Bridge collapses entirely, claiming the lives of 76 workers.
August 31 – Count Alexander Izvolsky and Sir Arthur Nicolson sign the Anglo-Russian Entente in Saint Petersburg, bringing a pause in The Great Game in Central Asia and establishing the Triple Entente.
September–December
September 7 – The passenger liner RMS Lusitania makes its maiden voyage from Liverpool, England to New York City.
September 26 – New Zealand and Newfoundland become dominions.
October – A committee of the Delegation for the Adoption of an International Auxiliary Language, made up of academics including Otto Jespersen, Wilhelm Ostwald and Roland Eötvös meet in Paris to select a language for international use. The committee ultimately decides to reform Esperanto.
October 17 – Guglielmo Marconi initiates commercial transatlantic radio communications between his high power longwave wireless telegraphy stations in Clifden Ireland and Glace Bay, Nova Scotia.
October 18 – Hague Convention revised by (second) Hague Peace Conference (effective 26 January 1910).
October 27 – Černová incident: Fifteen people are shot during the consecration of a Catholic church in Hungary (now Slovakia).
November 16 – British passenger liner RMS Mauretania, the world's largest and fastest at this date, sets out on her maiden voyage from Liverpool (England) to New York.
December 6 – Monongah Mining disaster: A coal mine explosion kills 362 workers in Monongah, West Virginia, United States.
December 8 – Upon the death of Oscar II, he is succeeded by his son Gustaf V as king of Sweden.
December 19 – An explosion in a coal mine in Jacobs Creek, Pennsylvania kills 239.
December 21 – Santa María School massacre. In Chile soldiers fire at striking mineworkers gathered in the Santa María School in Iquique, over 2000 are killed.
January 14: Earthquake in Jamaica.
January 6 – The first Montessori school and daycare center for working class children opens in Rome.
January 14 – An earthquake, in Kingston, Jamaica kills more than 1,000.
March – The 1907 Romanian Peasants' Revolt results in possibly as many as 11,000 deaths.
March 5 – At the opening of the new State Duma in St. Petersburg, Russia 40,000 demonstrators are dispersed by Russian troops.
March 15–March 16 – Elections to the new Parliament of Finland are the first in the world with woman candidates, as well as the first elections in Europe where universal suffrage is applied. Nineteen women are elected.
March 22 – The first taxicabs with taxi meters begin operating in London.
May–August
June 15 – The Second Hague Peace Conference opens at The Hague.
June 26 – Tiflis bank robbery: Bolsheviks attack a cash-filled bank coach in the centre of Tiflis, Georgia, killing forty people.
July 21 – The SS Columbia sinks after colliding with the lumber schooner San Pedro off Shelter Cove, California, U.S.A., resulting in 88 deaths.
July 24 – The Japan–Korea Treaty of 1907 brings the government and military of the protectorate of Korea more firmly under Japanese control.
August 1–9 – Robert Baden-Powell leads the first Scout camp on Brownsea Island, England.
August 29 – The partially completed superstructure of the Quebec Bridge collapses entirely, claiming the lives of 76 workers.
August 31 – Count Alexander Izvolsky and Sir Arthur Nicolson sign the Anglo-Russian Entente in Saint Petersburg, bringing a pause in The Great Game in Central Asia and establishing the Triple Entente.
September–December
September 7 – The passenger liner RMS Lusitania makes its maiden voyage from Liverpool, England to New York City.
September 26 – New Zealand and Newfoundland become dominions.
October – A committee of the Delegation for the Adoption of an International Auxiliary Language, made up of academics including Otto Jespersen, Wilhelm Ostwald and Roland Eötvös meet in Paris to select a language for international use. The committee ultimately decides to reform Esperanto.
October 17 – Guglielmo Marconi initiates commercial transatlantic radio communications between his high power longwave wireless telegraphy stations in Clifden Ireland and Glace Bay, Nova Scotia.
October 18 – Hague Convention revised by (second) Hague Peace Conference (effective 26 January 1910).
October 27 – Černová incident: Fifteen people are shot during the consecration of a Catholic church in Hungary (now Slovakia).
November 16 – British passenger liner RMS Mauretania, the world's largest and fastest at this date, sets out on her maiden voyage from Liverpool (England) to New York.
December 6 – Monongah Mining disaster: A coal mine explosion kills 362 workers in Monongah, West Virginia, United States.
December 8 – Upon the death of Oscar II, he is succeeded by his son Gustaf V as king of Sweden.
December 19 – An explosion in a coal mine in Jacobs Creek, Pennsylvania kills 239.
December 21 – Santa María School massacre. In Chile soldiers fire at striking mineworkers gathered in the Santa María School in Iquique, over 2000 are killed.