The Sultan of Kelantan is the constitutional head of Kelantan state in Malaysia. The executive power of the state is vested in him as the monarch of the state. The current sultan, Muhammad V, is the 29th Sultan of Kelantan. He is the Head of Islam in the state and the source of all titles, honours and dignities of its people. He was the 15th Yang di-Pertuan Agong or the monarch and head of state of Malaysia from 13 December 2016 to his abdication on 6 January 2019, after his election on 14 October 2016 at the 243rd (special) Conference of Rulers.

Kelantan is a state in Malaysia. The capital, Kota Bharu, includes the royal seat of Kubang Kerian. The honorific name of the state is Darul Naim. Kelantan is the only state outside of East Malaysia that does not use the term district in its second-level administrative division. Instead, the districts is named as colonies or collectivities and one autonomous subdistrict.