Ten Days That Shook the World is a book by American journalist John Reed, published in 1919. The book is a first-hand account of the October Revolution in Russia, which led to the rise of the Soviet Union.

John Reed (1887-1920) was an American journalist, poet, and revolutionary activist who is best known for his coverage of the Russian Revolution and his book "Ten Days That Shook the World," an eyewitness account of the Bolshevik takeover of Petrograd (now St. Petersburg) in 1917. Reed was a member of the Communist Party of the United States and a committed Marxist, who believed in the revolutionary potential of the working class.