Tunku Sarafuddin Badlishah ibni Sultan Sallehuddin (born 2 March 1967) is the current Raja Muda (Crown Prince) of Kedah.
He was proclaimed as Raja Muda of Kedah on 26 November 2017, upon the accession of his father, Sultan Sallehuddin ibni Almarhum Sultan Badlishah as the 29th Sultan of Kedah.