Cassano d'Adda is a town and comune in the Metropolitan City of Milan, Lombardy, Italy, located on the right side of the Adda River. It is on the border of the Metropolitan City of Milan and the province of Bergamo. It is served by Cassano d'Adda railway station.

The Adda is a river in North Italy, a tributary of the Po. It rises in the Alps near the border with Switzerland and flows through Lake Como. The Adda joins the Po a few kilometres upstream of Cremona. It is 313 kilometres (194 mi) long. The highest point of the drainage basin is the summit of la Spedla, at 4,020 metres (13,190 ft).