Foreign relations of Brunei

Brunei maintains diplomatic relations with 170 out of 193 countries, joined ASEAN on 7 January 1984, one week after resuming full independence, and gives its ASEAN membership the highest priority in its foreign relations. Brunei joined the United Nations in September 1984. It is also a member of the Organisation of Islamic Cooperation (OIC), the Asia-Pacific Economic Cooperation (APEC) forum and the Commonwealth of Nations. Brunei hosted the APEC Economic Leaders' Meeting in November 2000. In 2005 it attended the inaugural East Asia Summit.

Brunei has a number of diplomatic missions abroad and has close relations with Singapore, sharing an interchangeable currency regime as well as close military relations with the latter island-state. Aside from relations with other ASEAN states, of which the Philippines, Indonesia, and Malaysia are key partners, Brunei also has extensive relations with the Muslim world and the Arab world outside its own region.

International organizations
Brunei became a member state of the Commonwealth in 1984, ASEAN and the Organisation of Islamic Cooperation in 1984, the 7th member of the ASEAN-Japan Centre in 1990, the 159th United Nations member on 21 September 1985, a major player in BIMP-EAGA in 1994, and a founding member of the World Trade Organization (WTO) in 1995. Since 2009, Brunei and the Philippines signed a memorandum of understanding (MOU) that seeks to strengthen the bilateral co-operation of the two countries in the fields of agriculture and farm-related trade and investments.

Diplomatic relations
List of countries which Brunei maintains diplomatic relations with: