The diplomatic relationship between Pakistan and Brunei is very warm and friendly, primarily because both are Muslim countries and members of the Organisation of Islamic Cooperation. As the two countries are fellow members of the Commonwealth, Pakistan maintains a High Commission in Bandar Seri Begawan, and Brunei has a High Commission in Islamabad. To further foster ties between the two countries, the Brunei-Pakistan Friendship Association (BPFA) was created in 2008.
Originally Pakistan did not support the non-inclusion of Brunei to the Federation of Malaysia, the other was the separation of Singapore. Later, relations were established on 9 February 1984 when Malaysia established relations with Brunei.
Trade links between the two countries are small, largely because of Brunei's small size. The current trade volume between the two countries stands at US $5 million. To foster trade and investment between the two countries, the Pakistan-Brunei Joint Investment Company was created in November 2006. Areas like the oil and gas sector, real estate, hotels, telecommunications and halal meat projects are some sectors where the two countries can benefit.
Defence co-operation between the two countries remains strong. Brunei Darussalam and the Islamic Republic of Pakistan signed a Memorandum of Understanding on Defence Cooperation on 19 May 2004. Pakistan has so far trained up to 100 Bruneians at Pakistani military academies. In November 2008, the Defence Secretary of Pakistan, Lieutenant General (Rtd) Athar Ali, paid an official visit to Brunei to boost defence co-operation between the two countries. In October 2010, the Pakistan naval ship (PNS) SAIF docked at Muara Port to celebrate defence relations and goodwill between Brunei and Pakistan.
Pakistan was scheduled to participate in the third Brunei International Defence Exhibition (BRIDEX 2011), and invited Brunei to participate in the International Defence Exhibition and Seminar (IDEAS 2010). Pakistan has also invited the naval forces of Brunei to participate in Pakistan's multinational naval exercise, Aman.
- High Commission of Pakistan in Bandar Seri Begawan, Brunei
- High Commission of Brunei Darussalam in Pakistan
- "Brunei-Pakistan association launched". Archived from the original on 21 February 2015. Retrieved 28 December 2010.
- "Brunei-Pakistan Relations". Ministry of Foreign Affairs and Trade (Brunei). Archived from the original on 22 February 2014. Retrieved 4 February 2014.
- Trade volume between Pak-Brunei reaches $5m Archived 28 October 2010 at the Wayback Machine
- "Pakistani envoy sees great scope for bilateral trade". Archived from the original on 4 March 2016. Retrieved 28 December 2010.
- Brunei & Pakistan Discuss Defence Cooperation Archived 29 September 2011 at the Wayback Machine
- "Historic get-together for officers trained in Pakistan". Archived from the original on 12 November 2014. Retrieved 28 December 2010.
- "Pakistan, Brunei to discuss defence ties". Archived from the original on 12 November 2014. Retrieved 28 December 2010.
- Pakistan, Brunei Celebrate Defence Ties And Goodwill
- "Pakistan to participate in BRIDEX 2011". Archived from the original on 15 October 2010. Retrieved 28 December 2010.