Sultan Sulaiman Royal Mosque is Selangor's royal mosque, which is located in Klang, Selangor, Malaysia. It was constructed by the British in the early 1932 and was officially opened in 1933 by the late Almarhum Sultan Sir Alaeddin Sulaiman Shah.

Klang or Kelang, officially Royal City of Klang, is a city, royal city and former capital of the state of Selangor, Malaysia. It is located within the Klang District. It was the civil capital of Selangor in an earlier era prior to the emergence of Kuala Lumpur and the current capital, Shah Alam. Port Klang, which is located in the Klang District, is the 12th busiest transshipment port and the 12th busiest container port in the world.