Walter Lynwood Fleming (1874–1932) was an American historian of the South and Reconstruction. He was a leader of the Dunning School of scholars in the early 20th century, who addressed Reconstruction history using modern historiographical technique. He was a professor at Vanderbilt University from 1917 through his career, also serving as Dean of the School of Arts and Sciences, and Director of the Graduate School. A prolific writer, he published ten books and 166 articles and reviews.
Walter Lynwood Fleming was born on a plantation at Brundidge, Alabama, on April 8, 1874, the son of William LeRoy and Mary Love (Edwards) Fleming. Both his parents were born in Georgia and had migrated west with their families to Alabama in the ante-bellum period as cotton was developed as the area's commodity crop. His father, a well-to-do planter and slave owner, served in the Civil War as a cavalryman. He was not politically prominent during Reconstruction.
Fleming attended Alabama Polytechnic Institute, now known as Auburn University, taking the B.S. degree, with honors, in 1896, and the M.S. degree in 1897. He taught in the public schools of Alabama in 1894–1896. He became an instructor in History and English at his alma mater in 1896–1897. He was assistant librarian from 1897 to 1898, and an instructor in English from 1899 to 1900.
In 1898 Fleming enlisted in the Second Alabama Volunteers as a private; was promoted to lieutenant, and fought in the Spanish–American War.
Fleming began graduate work in history at Columbia University in New York in 1900, taking the PhD in 1904. In his studies, he was influenced especially by Professor George Petrie of Alabama Polytechnic Institute and Professor William Archibald Dunning of Columbia.