The Duchy of Reggio was a historical state located in southern Italy, primarily in the region of Calabria. Established in the 11th century, it became part of various larger political entities over the centuries, including the Kingdom of Sicily and later the Kingdom of Naples. The duchy was known for its strategic coastal position and agricultural production. Throughout its history, the Duchy of Reggio experienced periods of prosperity and decline, influenced by local governance and external conflicts. It was ruled by various noble families, contributing to its rich cultural heritage. The duchy eventually lost its autonomy and was absorbed into larger political structures by the 19th century.