* Henry Fonda in "The Horse Soldiers" (1959)
* Carl Benton Reid in "Gone to the Wars" (1958)
* Jack Palance in "How the West Was Won" (1962) (brief appearance)
* David Carradine in "North and South" (1985) (TV miniseries)
* Michael Byrne in "Gettysburg" (1993)
* Ron Eldard in "Gods and Generals" (2003)
* Jeff Daniels in "Lincoln" (2012) (brief appearance)
It's worth noting that Grant hasn't been the central figure in many movies. Often, his role is smaller, supporting the portrayal of other historical figures.