Prince Felix Salm-Salm (1828–1870) was a Prussian military officer of noble birth and soldier of fortune, who served in the Schleswig-Holstein Army (Prussian Army), Austrian Army, the Union Army during the American Civil War, the army of Emperor Maximilian I inMexico and thereafter in the Prussian Army. He was killed in action during the Franco-Prussian War.
He was killed at Battle of Gravelotte during Franco-Prussian War on Audust 18, 1870.