Iskandar of Johor (d. 2010)
Al-Mutawakkil Alallah Sultan Iskandar Al-Haj ibni Almarhum Sultan Ismail (Jawi: المتوكل على الله سلطان إسكندر الحاج إبن المرحوم سلطان إسماعيل الخالدي; 8 April 1932 – 22 January 2010) was the 24th Sultan of Johor and the 4th Sultan of Modern Johor. He succeeded his father Sultan Ismail upon the latter's death on 10 May 1981. He was the eighth Yang di-Pertuan Agong (Supreme King or High King) of Malaysia from 26 April 1984 to 25 April 1989. Sultan Iskandar's reign lasted for almost 29 years until his death in January 2010. His children are married into the different royal houses of Malaysia. His eldest daughter Tunku Kamariah, the Tengku Puan Laksamana, married the Tengku Laksamana of Selangor, Tengku Sulaiman Shah. His successor and eldest son Sultan Ibrahim married Raja Zarith Sofiah of the Perak Royal Family. His daughter Tunku Azizah Aminah Maimunah Iskandariah married the heir apparent of Pahang, now Sultan Abdullah. His younger son Tunku Abdul Majid married a member of the Kedah Royal Family, Tunku Teh Mazni.

As was the case with his grandfather, Sultan Ibrahim, Sultan Iskandar's independent mindset resulted in strained relations with the Malaysian federal government on numerous occasions. This was more so during his days as the Yang di-Pertuan Agong, whereby a number of notable public incidents involved Sultan Iskandar. Nevertheless, Sultan Iskandar was reputed to show great concern to his subjects, and was held in high esteem by many of his subjects–particularly the Malays and Orang Aslis. His time as the Sultan of Johor was marred by accusations of violence and brutality. Sultan Iskandar was notorious for his bad temper which often resulted in violent episodes of rage and brutality to members of his staff and the general public. The 1992 Gomez incident surrounding the Sultan eventually culminated in the removal of "legal immunity" for members of the royal family.

Sultan Iskandar is reputed to have been a staunch disciplinarian, with willingness to occasionally voice personal opinions on governmental issues. On the personal side, subjects who have personally approached the Sultan in his later years described him as a person with a warm and generous personality. However, past critics had also argued that Sultan Iskandar was a person with a turbulent temper. These claims were made by citing records of past notorious incidents, which include an experience of being disinherited from being the Tunku Mahkota of Johor (or Crown Prince in English) by his father, in 1961, as well as a series of alleged criminal acts occurring between the 1970s and the 1990s which were published in the press and provoked widespread moral outrage within the Malaysian public.During his younger days as a prince, Iskandar was commonly known by his first name, "Mahmood" or his full name "Mahmood Iskandar". He largely discontinued the use of his first name after he became Sultan in 1981, although some people still referred to him by his full name on an occasional basis.