[1] Relations between the two of the countries can be traced back during World War II when the Australian Army played a crucial role to liberating Brunei from Japanese occupation in 1945.

[1][2][3] Both countries had enjoyed a warm relationship before 1959 when Brunei achieved self-government.

[4] Brunei crude petroleum comprising U$978 million of the total trade.

[4] There is also a number of Australian teachers and other professionals work in Brunei while Australia became one of the destination for Bruneian students.

[4] Both countries enjoy defence relations particularly in military exercises and trainings.