Alaeddin Mosque or Sultan Alauddin Mosque or Bandar Mosque is located in Kampung Bandar, Jugra , Kuala Langat , Selangor , Malaysia . It is located near Sungai Langat and Kampung Pasir Jugra.

This mosque was opened by Sultan Alaeddin Suleiman Shah Ibni Raja Muda Musa , the 5th Sultan of Selangor in 1905 which coincided with the construction of Istana Bandar / Istana Alaeddin . During his lifetime, Sultan Alaeddin used this mosque to perform Friday prayers.

In terms of design, this mosque is said to have received the architectural influence of the Deli kingdom in Medan , North Sumatra . The Alaeddin Mosque was gazetted as an Old Monument and Historical Site under the Building Act Number 168/1976 on 24 July 1980. It was also registered under the National Heritage Act 2005 (Act 645) in 2008 by the National Heritage Department . This was confirmed by the Heritage Commissioner, Dato Professor Emeritus Zuraina Majid .