San Gregorio is a commune in the far south of Chile. It is part of Magallanes Region and Province, and is administered by the municipality of the same name located in Punta Delgada, the principal town in the commune (the coordinates are those of Punta Delgada).The commune is on the north shore of the Strait of Magellan; between the Strait, to the south, and the border with Argentina, to the north.