Rubén López Sabariego (June 11, 1917 – September 30, 1961) was a Cuban bus driver working on the Guantanamo Bay Naval Base, whose mysterious disappearance and death there became a cause célèbre in Cuba. Naval Intelligence suspected Lopez was a Cuban agent, but had nevertheless continued to let him keep his job on the base. His body had been left to rot for over three weeks before it was returned to Cuba.When his body was returned, Cuban pathologists noting how extensively his bones had been broken, concluded he had been tortured.