Tengku Ampuan Hajah Bariah binti Almarhum Sultan Hisamuddin Alam Shah Al-Haj (31 August 1933 – 21 March 2011) was the Tengku Ampuan Besar (Queen consort) of Terengganu from 1979 to 1998 as the wife of Sultan Mahmud Al-Muktafi Billah Shah. She was the sister of late Sultan Selangor, Almarhum Sultan Salahuddin Abdul Aziz Shah and the stepmother of the current Sultan Terengganu, Sultan Mizan Zainal Abidin.