- Feb 1 US Assay Office in Salt Lake City, Utah, opens
- Feb 1 US forces withdraw from Cuba after liberal Jose Miguel Gomez becomes president; ensuing political instability will bring a threat of US intervention in 1912
- Feb 2 Italian writer Filippo Tommaso Marinetti publishes "Manifest o of Futurism" in Paris, France
NAACP Forms
Feb 12 National Association for the Advancement of Colored People (NAACP) forms
- Feb 12 Netherlands' SDAP suspends Marxist Tribune group (Gorter & Wijnkoop)
Polonia
Feb 12 Symphony in B minor "Polonia", by Polish composer Ignacy Jan Paderewski has its public premiere with the Boston Symphony Orchestra
- Feb 16 1st subway car with side doors goes into service (NYC)
- Feb 16 Serbia mobilizes against Austria-Hungary
Great White Fleet
Feb 22 Great White Fleet, 1st US fleet to circle the globe, returns to Virginia
February Manifesto
Feb 23 Russian Tsar Nicholas II dissolves Finnish Diet
- Feb 26 Austria and Turkey conclude an agreement in which Turkey recognizes Austria's 1908 annexation of Bosnia and Herzegovina and is to receive compensation
- Feb 28 1st National Woman's Day is observed in the United States. Organized by the Socialist Party of America in honor of the 1908 garment workers' strike in New York, where women protested against working conditions.
Admirals
Aviators
Gangsters
Generals
Industrialists
Suffragists