Frank Alexander Montgomery (January 7, 1830 – December 16, 1903) was an American politician best known for his memoir of life as a Confederate cavalry officer in the Western Theater of the American Civil War (1861–1865) called Reminiscences of a Mississippian in Peace and War (1901).

Frank Alexander Montgomery was born on January 7, 1830, in Adams County, Mississippi, to James Jefferson Montgomery. He was Lieutenant-Colonel of the 1st Mississippi Cavalry Regiment during the American Civil War. He served eight years as a member of the Mississippi House of Representatives and one term as Judge of the Fourth Circuit Court District of Mississippi. He died on December 16, 1903, and is buried at Beulah Cemetery, Bolivar County, Mississippi.

• Reminiscences of a Mississippian in Peace and War (1901)

• List of Allegheny College people
• List of people from Mississippi
• List of slave owners

• Media related to Frank A. Montgomery at Wikimedia Commons
• Frank A. Montgomery at Find a Grave
• Works by or about Frank A. Montgomery at the Internet Archive