James Lusk Alcorn (November 4, 1816 – December 19, 1894) was a Republican governor and a U.S.
senator during the Reconstruction of his adopted state of Mississippi.
A moderate Republican, Alcorn engaged in a bitter rivalry with Radical Republican "carpetbagger" Adelbert Ames, who defeated him in the 1873 Mississippi gubernatorial race.
He briefly served as a brigadier general of Mississippi state troops in Confederate Army service during the early part of the American Civil War.
Among the Confederate generals who joined the post-Civil War Republican Party, only James Longstreet had been of higher rank than Alcorn.