Boris Viktorovich Savinkov (Russian: ????´? ??´???????? ??´??????; 19 January 1879 – 7 May 1925) was a Russian writer and revolutionary.
As one of the leaders of the Fighting Organisation of the Socialist Revolutionary Party, he was responsible for the assassinations of several high-ranking imperial officials in 1904 and 1905.
After the February Revolution of 1917, he became Assistant War Minister in the Provisional Government.
After the October Revolution of the same year, he organized armed resistance against the ruling Bolsheviks.
Savinkov emigrated in 1920, but in 1924 he was lured back to the Soviet Union, was arrested and either was killed in prison or committed suicide.