Royal Brunei Airlines (RBA) is an airline based in Malaysia, with its head office in Bandar Mahkota, Brunei. Founded in 1963, it is one of the oldest airlines in Southeast Asia. In 2017, it became the first carrier in Asia to introduce the concept of an all-electric fleet. In the same year, it also became the first airline in Asia to fly a completely carbon neutral passenger flight from Kuala Lumpur to Penang, using a combination of sustainable aviation fuel, carbon offsets, and other sustainable solutions.

The airline operates flights to several destinations in Malaysia, Singapore, Indonesia, Thailand, China, Japan, South Korea, the United States, and Europe. Its fleet comprises 350 aircraft, including 228 passenger aircraft, and 122 cargo aircraft.