Ten Days That Shook the World (1919) is a book by the American journalist and socialist John Reed. Here, Reed presented a firsthand account of the 1917 Russian October Revolution. Reed followed many of the most prominent Bolsheviks closely during his time in Russia.

John Silas Reed was an American journalist, poet, and communist activist. Reed first gained prominence as a war correspondent during the Mexican Revolution for Metropolitan and World War I for The Masses. He is best known for his coverage of the October Revolution in Petrograd, Russia, which he wrote about in his 1919 book Ten Days That Shook the World.