Virgil H. "Bert" Effinger (1873 – 15 December 1955) was a renegade member of the Ku Klux Klan who became the leader of the Black Legion in the United States. He advocated a fascist revolution in the US with himself as dictator.
Born in Newark, Ohio, Effinger served with the United States Army during the Spanish–American War. Settling in Lima, Ohio after his military service, Effinger worked as a salesman in the town. A strong racist, anti-Semite and anti-Catholic, he joined the Ku Klux Klan and attained the rank of Grand Titan within the movement.
Effinger took control of the Black Legion, a group within the local Klan, in 1931 and saw in it the basis for a network of militia cells. He soon advocated a revolution with the Legion seizing power in Washington D.C. and installing him as dictator. Effinger underlined his intetions when he described his movement as "a guerilla army designed to fight the Republican and Democratic parties". Such was his fanaticism that he even rewrote American history by claiming that the Legion dated back to the Boston Tea Party.