The Curtius Museum (French: Musée Curtius) is a museum of archaeology and decorative arts located on the bank of the river Meuse in Liège, Belgium. It is classified as a Major Heritage of Wallonia.
It was built sometime between 1597 and 1610 as a private mansion for Jean Curtius, industrialist and munitions supplier to the Spanish army. With its alternating layers of red brick and natural stone and its cross-mullioned windows, it typifies the regional style known as Mosan Renaissance architecture.