Santiago Iglesias Pantín

Santiago Iglesias Pantín (1872-1939) was a Spanish-born labor leader who became the most important figure in Puerto Rico's early labor movement. A carpenter by trade, he arrived in Puerto Rico in 1896 and immediately began organizing workers.

Imprisoned by the Spanish colonial government for labor organizing, Iglesias was freed after the U.S. invasion and founded the Federación Libre de Trabajadores (Free Federation of Workers) in 1899, affiliating it with the American Federation of Labor. He served as Puerto Rico's Resident Commissioner in Washington from 1933 until his death.

Iglesias organized some of the first strikes in Puerto Rico's history, including sugar and tobacco worker strikes that challenged both local planters and American corporations. His alliance with the AFL brought mainland labor solidarity but also controversy — critics argued that his focus on labor rights within the American system legitimized colonial rule.

His legacy in Puerto Rican labor history is foundational: he established the organizational structures that empowered workers to resist colonial exploitation, even as he worked within the colonial system.