Sultan Salehuddin, the Sultan Sultanah Maliha, the Sultanah Tengku Sarafudin Badlishah ibni Al-Aminul Karim Sultan Sallehuddin (Jawi: تڠكو شرف الدين بدلي شاه ابن الأمين الكريم سلطان صالح الدين; born 2 March 1967) is the current Raja Muda (Crown Prince) of Kedah.

[1] Tengku Sarafudin Badlishah was born on 2 March 1967 in Alor Setar, Kedah.

He graduated from Brunel University London with a Bachelor of Laws (Hons) degree in 1990.

He received his Barrister at Law (Inner Temple) UK appointment and was admitted in the High Court of Malaya as an advocate and solicitor in 1994.

As Raja Muda, Tengku Sarafudin holds a number of important positions including as chancellor of the Management and Science University and president of the Kedah Islamic Religious Council.