Reinaldo Paniagua Diez

Reinaldo Paniagua Diez (July 20, 1934 – January 29, 2021) was a Puerto Rican politician who was the seventh Puerto Rico Secretary of State from January 2, 1977, to 1979, under Governor Carlos Romero Barceló and served as acting Governor whenever the governor was traveling. He had previously been Romero-Barceló's campaign manager during the 1976 gubernatorial campaign.

Paniagua was born on July 20, 1934, to Rita Diez and Reinaldo Paniagua. He died on January 29, 2021, of natural causes.