Ngawa Tibetan and Qiang Autonomous Prefecture, also known as Aba, is an autonomous prefecture of northwestern Sichuan, bordering Gansu to the north and northeast and Qinghai to the northwest. Its seat is in Barkam, and it has an area of 83,201 km². The population was 919,987 in late 2013.
The county of Wenchuan in Ngawa is the site of the epicenter of the 2008 Sichuan earthquake, in which over 20,000 of its residents died and 40,000 were injured.