Elías Beauchamp (June 8, 1908 – February 23, 1936) was a member of the Cadets of the Republic, the paramilitary wing of the Puerto Rican Nationalist Party. Beauchamp is best known for having assassinated Col. Elisha Francis Riggs, the United States appointed chief of the Puerto Rico Police, along with fellow Cadet Hiram Rosado. Both men were arrested and shot without trial, officially while attempting to escape, at Police Headquarters in San Juan. News of the assassinations spread throughout the United States and led to legislative proposal by U.S. Senator Millard Tydings, to grant independence to Puerto Rico.