Elijah P. Marrs (January 1840 – August 30, 1910) was a minister and educator in Louisville, Kentucky. He was a sergeant in the 12th Regiment Heavy Artillery U.S. Colored Troops during the American Civil War (1861-1865). After the war he taught in various schools and helped organize Loyal Leagues to defend blacks from attacks by the Ku Klux Klan. Together with his brother, Henry, he helped found what became Simmons College of Kentucky in Louisville in 1879.