Benjamin Frederick Allen (February 15, 1815 – November 5, 1876) was an American lawyer and politician in the state of Florida.

Allen attended the University of Virginia from 1839 to 1840, and moved to Tallahassee, Florida after graduation to take care of his brother, who died shortly after.

[2][3] Allen ran as the Opposition Party candidate in the 1860 United States House of Representatives election for Florida's at-large congressional district, losing to clerk of the Florida House of Representatives Robert Benjamin Hilton, receiving only 40% of the vote compared to Hilton's 60%.

[4] At the outbreak of the American Civil War, Allen sided with the Confederacy and joined the Confederate States Army in 1861, serving as a private in Dyke's Light Artillery Company under the command of Captain Charles Dyke.

[7] Allen served as secretary of state until July 4, 1868, when he was succeeded by George J. Alden after an election.