The South American country whose name comes from the Latin word for “silver” is Argentina.
Argentina derives from the Latin argentum, meaning silver, through the Italian adjective argentino, meaning silvery or made of silver. The name reflects early European legends about immense silver wealth supposedly located inland from the Río de la Plata, whose name itself means “River of Silver” or “Silver River.”
The silver story became attached to the region during the early sixteenth century, when explorers heard reports of wealthy lands and encountered silver objects obtained through Indigenous trade networks. The name appeared in early maps and in Martín del Barco Centenera's 1602 poem La Argentina. It gradually became more common during the colonial and independence periods.
Argentina was not always the country's formal name. The territory was known as the Viceroyalty of the Río de la Plata under Spanish rule, and post-independence governments used names such as the United Provinces of the Río de la Plata. The 1826 constitution used “Argentine Republic,” while the modern official name is República Argentina.