Elmer "Geronimo" Pratt, also known as Geronimo Ji-Jaga and Geronimo Ji-Jaga Pratt, was a decorated military veteran and a high-ranking member of the Black Panther Party in the United States in the late 1960s and early 1970s. Born in Louisiana, he served two tours in Vietnam, receiving several decorations. He moved to Los Angeles, where he studied at UCLA under the GI Bill and joined the Black Panther Party.