Ramingstein is a municipality in the district of Tamsweg, in the state of Salzburg, Austria. It lies in the Lungau region, the southeastern part of Salzburg, near the border with Styria.
The municipality is situated in the valley of the Mur river, which flows through the area, and is surrounded by the mountains of the Central Alps. The district seat, Tamsweg, lies a short distance to the west.
Ramingstein is known for its rural, alpine setting and for the historic ruins of Finstergrün Castle, which sits on a hill above the Mur valley. The area is also associated with the Lungau's traditional cultural landscape, including its historic farms and churches.