Tunku Puan Zanariah binti Almarhum Tengku Ahmad, formerly known as Sultanah Zanariah (Jawi:تونكو ڤوان زنيرة بنت المرحوم تڠکو احمد) (5 July 1940 – 17 March 2019), was the second wife of Sultan Iskandar of Johor from their marriage in 1961 until his death in 2010. She served as Raja Permaisuri Agong between 1984 and 1989. Her sister, Tunku Puan Nora née Sultanah Nora Ismail, married Sultan Ismail.