Brunei International Airport (BIA) (Malay: Lapangan Terbang Antarabangsa Brunei, Jawi: لاڤڠن تربڠ انتارابڠسا بروني ), (IATA: BWN, ICAO: WBSB), is the primary international airport and official airport of entry; one of two airports in the Sultanate of Brunei Darussalam, on the island of Borneo.

Located near Bandar Seri Begawan in the Brunei-Muara District, it serves as the home base and hub for Royal Brunei Airlines (RB). Additionally, the Royal Brunei Air Force (RBAirF) is also headquartered at Royal Brunei Air Force Base, Rimba, which is located opposite the 3,685 by 46 metres (12,090 by 151 feet) main runway on the north-western side, within the aerodrome's environs. Brunei International Airport serves international destinations across Asia and Oceania, as well as flights to the Middle East and London Heathrow.