Istana Alam Shah is the official palace of the Sultan of Selangor, located in southern Klang, the royal town of the state of Selangor, Malaysia.

Between 1903 and 1957[1][2] there existed an older palace on the same site, known as Istana Mahkota Puri.

The palace was demolished in October 1957 and soon replaced by the present-day structure.

Despite the Sultan having two other official residences in Shah Alam and Putrajaya, most royal ceremonies (such as the coronation of a new Sultan) involving the Selangor royal family are held in Istana Alam Shah.

In early 2000, extensive renovations were carried out by Sultan Salahuddin Shah.