List of heirs apparent

State	Image	Style	Current heir apparent	Date of birth (age)	Relationship with current monarch
Johor Darul Takzim		Tunku Mahkota	Tunku Ismail Idris ibni Sultan Ibrahim Ismail	(1984-06-30) 30 June 1984	Eldest son
Kedah Darul Aman		Raja Muda	Tunku Sarafuddin Badlishah ibni Sultan Sallehuddin	(1967-03-02) 2 March 1967	Eldest son
Kelantan Darul Naim		Tengku Mahkota	Tengku Muhammad Faiz Petra ibni Sultan Ismail Petra	(1974-01-20) 20 January 1974	Eldest younger brother
Pahang Darul Makmur		Tengku Mahkota	Tengku Hassanal Ibrahim Alam Shah ibni Al-Sultan Abdullah Ri'ayatuddin Al-Mustafa Billah Shah	(1995-09-17) 17 September 1995	Eldest surviving son
Perak Darul Ridzuan		Raja Muda	Raja Ja'afar ibni Raja Muda Musa	(1941-09-26) 26 September 1941	Cousin
Perlis Indera Kayangan		Raja Muda	Tuanku Syed Faizuddin Putra ibni Tuanku Syed Sirajuddin Jamalullail	(1967-12-30) 30 December 1967	Eldest son
Selangor Darul Ehsan		Raja Muda	Tengku Amir Shah ibni Sultan Sharafuddin Idris Shah	(1990-12-12) 12 December 1990	Eldest son
Terengganu Darul Iman		Yang di-Pertuan Muda	Tengku Muhammad Ismail ibni Sultan Mizan Zainal Abidin	(1998-03-01) 1 March 1998	Eldest son

The State of Negeri Sembilan Darul Khusus does not have an heir apparent, as the ruler of Negeri Sembilan, known as the Yang di-Pertuan Besar of Negeri Sembilan, is elected by a council of the four Undangs of Sungai Ujong, Jelebu, Johol, and Rembau.

The rules of succession in Perak Darul Ridzuan are more complicated than in other Malay states. After a sovereign is appointed and installed he will appoint the Raja Muda (heir apparent) and Raja Di Hilir (heir presumptive) on the advice of the Dewan Negara (Royal Council).[2] The reigning Sultan appoints princes of the blood (Waris negri) to certain high princely titles for life. They are arranged in a strict order of precedence indicating the order of succession to the throne. The relative precedence of these titles has altered from time to time, and additional titles have been included and removed. However, the current order, as confirmed on 25 February 1953, stands as follows:

1. Duli Yang Teramat Mulia (Tuanku) Raja Muda, Wakil us-Sultan, Wazir ul-Azam Negara Perak Dar ur-Ridzwan
2. Duli Yang Amat Mulia Raja di-Hilir
3. Yang Teramat Mulia Raja Kechil Besar
4. Yang Teramat Mulia Raja Kechil Sulong
5. Yang Teramat Mulia Raja Kechil Tengah
6. Yang Teramat Mulia Raja Kechil Bongsu.

On the death or promotion of an existing titleholder, the holder of the next most senior title, succeeds. On the death of a reigning Sultan, the prince holding the title of Raja Muda, the senior prince in the hierarchy, succeeds him. The prince holding the title of Raja di-Hilir becomes the new Raja Muda. The Raja Kechil Besar becomes Raja di-Hilir, and so on. The new Sultan may then appoint his own nominee to the most junior title made vacant by these successions. [3]