The Fortified Area of Silesia () was a set of Polish fortifications, constructed along the interbellum border of Poland and Germany in the area of then-divided Upper Silesia. It spreads from the village of Przeczyce in the north to the town of Wyry in the south, along the line of sixty kilometers. Headquarters of the area was placed in Chorzów and its commandant was General Jan Jagmin-Sadowski.