Gouverneur Kemble Warren was an American civil engineer and United States Army general during the American Civil War. He is best remembered for arranging the last-minute defense of Little Round Top during the Battle of Gettysburg and is often referred to as the "Hero of Little Round Top". His subsequent service as a corps commander and his remaining military career were ruined during the Battle of Five Forks, when he was relieved of command of the V Corps by Philip Sheridan, who claimed that Warren had moved too slowly. A post-war court of inquiry found that Sheridan's relief of Warren was unjustified.

Little Round Top is the smaller of two rocky hills south of Gettysburg, Pennsylvania—the companion to the adjacent, taller hill named Big Round Top. It was the site of an unsuccessful assault by Confederate troops against the Union left flank on July 2, 1863, the second day of the Battle of Gettysburg, during the American Civil War.