Blauen may refer to:

• Blauen (Badenweiler), a mountain in the Black Forest, Germany
• Blauen, Basel-Landschaft, municipality in the canton of Basel-Country in Switzerland

• 1877-78 Welsh Cup
• 18777 Hobson
• 18779 Hattyhong
• 1877 Atlantic hurricane season
• 1877 Australia v England series
• 1877 Brooklyn Hartfords season
• 1877 Cincinnati Red Stockings season
• 1877 college football season
• 1877 Great Fire of Saint John, New Brunswick
• 1877 Hartford Dark Blues season
• 1877 Home Nations Championship
• 1877 in football (soccer)
• 1877 in France
• 1877 in Norway
• 1877 in paleontology
• 1877 in the American Old West
• 1877 in the United States
• 1877 Iquique earthquake
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• 1877 Kentucky Derby
• 1877 Liberian general election
• 1877 Louisville Grays season
• 1877 Major League Baseball season
• 1877 Marsden