osio

Osio is a name of Italian origin that can function as both a surname and a toponym. In Italy, the term is best known as the name of two nearby municipalities in Lombardy. Osio Sotto and Osio Sopra are located in the province of Bergamo, within the Lombardy region near the Milan metropolitan area. The names reflect their relative positions in the local landscape, with Sotto meaning “below” and Sopra meaning “above.” Both towns are part of the same geographic area and have historical ties to local landholders and communities bearing the Osio name.

As a surname, Osio appears in Italian populations and in communities with Italian heritage. It is found primarily in northern Italy and among diaspora communities worldwide. The surname may originate from place-names or from a personal name used in Lombard or Roman periods; the exact etymology can vary by family and region.

Outside of specific places and families, Osio appears in historical and genealogical contexts as part of Lombard or Latin roots that fed local naming conventions. The term does not denote a single international entity, but rather a collection of geographic and familial references tied to Lombardy and its history.