Emil Lewis Holmdahl (August 26, 1883 – April 8, 1963) was machine gunner, soldier of fortune, spy, gun runner, and treasure hunter who fought under John J. Pershing in the Spanish American War in the Philippines, under Lee Christmas in Central America, under Francisco Madero, Pancho Villa, and Venustiano Carranza in the Mexican Revolution, and under John J. Pershing in World War I. In 1926, Holmdahl was accused of having stolen Francisco Pancho Villa's head.