Masjid Kampong Kupang is located about 17km from Tutong Town. The mosque was built in 1981 on the site of land of 0.25 acres and was completed in early May 1982 at a cost of $ 300,000.00 funded by the Government of His Majesty and the help of the Islamic Religious Council. mosque was officially opened by Pehin Datu Imam Dato Paduka Seri Setia Ustaz Hj Abdul Hamid bin Prospective, Qadhi of Brunei Darussalam on Friday, the 8th. Jamadilawal equivalent to 10th 1404. February 1984 in conjunction with the declaration of the National Day of Brunei Darussalam. capacity mosque can accommodate 300 worshipers. Among the facilities available in this mosque is deceased and complete tool room libraries. Mosque also experienced an expansion so it can accommodate up to 500 worshipers. Additional mosque was made in 1997 and completed in December 1997 for $ 85,000.00.