Mizan Zainal Abidin of Terengganu child Tengku Muhammad Ismail
Her Highness Tengku Nadhirah Zahrah, the Tengku Puteri Utama Raja (b. 18 December 1996)
His Royal Highness Tengku Muhammad Ismail, the Crown Prince (b. 1 March 1998)
His Highness Tengku Muhammad Mua′az, the Tengku Sri Setia Mahkota Raja (b. 22 December 2000)
Her Highness Tengku Fatimatuz Zahra’, the Tengku Puteri Daulath Raja (b. 19 April 2002)After Sultan Mizan was elected as Yang di-Pertuan Agong, he appointed Tengku Muhammad Ismail, then aged eight, as Regent on 12 November 2006. Because of Tengku Muhammad Ismail's young age, a three-member Regency Advisory Council was established to discharge his duties for him. The council's members were Tengku Baderulzaman, Sultan Mizan's younger brother, Tengku Sulaiman Ismail, Sultan Mizan's uncle, and former Federal Court judge Dato' Abdul Kadir Sulaiman. He was proclaimed as regent during a ceremony on 12 December.Upon reaching Mukallaf (13 years of age), the Islamic age of responsibility, and according to Shariah law and the constitution of Terengganu, Tengku Muhammad Ismail became able to discharge his duties himself.  However, the Sultan formed another council, Majlis Perwakilan Pemangku Raja, to perform the Regent’s duty while he was away from Terengganu pursuing his studies.  This second and current council is headed by Tengku Mustafa Kamel, another of Sultan Mizan’s younger brothers, together with former Regency Advisory Council members Tengku Sri Laksamana Raja Tengku Sulaiman Ismail and Dato' Haji Abdul Kadir Sulaiman.
During his younger days, Sultan Mizan was a keen footballer. He is currently active in golf, endurance riding and scuba diving. In addition, the Global Taekwondo Federation (GTF) awarded Mizan an Honorary 7th Degree Black Belt in recognition of his active participation in the sport.
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