It is not known when postal orders began to be issued in Brunei.
Bruneian-issued Malaysian postal orders edit
Malaysian postal orders were issued in Brunei as late as 1988, but it is not known when these issues began nor when they ended. Extant examples issued at the post office in Bandar Seri Begawan have been confirmed.
Bruneian-issued British postal orders edit
British postal orders are issued in the local post offices. It is not known when this practice started.
British Forces Post Office issues edit
As Brunei is a fully independent Commonwealth member state, postal orders are issued at the BFPO in Seria.