Oscar López Rivera is a Puerto Rican activist and militant who was a member and suspected leader of the Fuerzas Armadas de Liberación Nacional Puertorriqueña, a clandestine paramilitary organization devoted to Puerto Rican independence that carried out more than 130 bomb attacks in the United States between 1974 and 1983. López Rivera was tried by the United States government for seditious conspiracy, use of force to commit robbery, interstate transportation of firearms, and conspiracy to transport explosives with intent to destroy government property.
López Rivera declared himself a prisoner of war and refused to take part in most of his trial. He maintained that according to international law he was an anticolonial combatant and could not be prosecuted by the United States government. On August 11, 1981, López Rivera was convicted and sentenced to 55 years in federal prison. On February 26, 1988, he was sentenced to an additional 15 years in prison for conspiring to escape from the Leavenworth prison.
López Rivera was not directly linked to any specific bombings.