Raja Permaisuri Tuanku Bainun (Jawi: راج ڤرمايسوري توانکو بعينون; born Bainun binti Mohd Ali; 7 November 1932) is the former Raja Permaisuri (queen consort) of Perak. She was also the ninth Raja Permaisuri Agong (queen consort of Malaysia) and the first commoner ever to be installed as the Raja Permaisuri Agong. She is the widow of the Sultan Azlan Shah and the mother of the incumbent Sultan Nazrin Shah. She is now styled as Yang Maha Mulia Raja Permaisuri Tuanku Bainun.



