The Kelantan State Legislative Assembly (Malay: Dewan Negeri Kelantan) is the unicameral state legislature of the Malaysian state of Kelantan. It consists of 45 members representing single-member constituencies throughout the state. Elections are held no more than five years apart.

The State Legislative Assembly convenes at the Kota Darul Naim in the state capital, Kota Bharu.

Out of the 45 seats, 43 are held by the Perikatan Nasional (PN) ruling coalition after the 2023 state election. Within the coalition, the Malaysian Islamic Party (PAS) holds 37 seats while the Malaysian United Indigenous Party (BERSATU) holds 6 seats. The PN coalition commands a two-thirds supermajority in the assembly.

Meanwhile, Pakatan Harapan (PH) - National Trust Party (AMANAH) and Barisan Nasional (BN) - United Malays National Organization (UMNO) hold only 1 seat each.

The Kelantan State Legislative Assembly enacts legislation concerning matters in the State List and Joint List defined in the Federal Constitution. The Speaker presides over debates in the Assembly.

The leader of the majority party or coalition in the Assembly is appointed Menteri Besar by the Sultan of Kelantan. The person who assumes the role of Menteri Besar appoints the state's executive council, or EXCO (Majlis Mesyuarat Kerajaan), drawing from members of the Assembly.

The 2023 Kelantan state election witnessed 37 governmental seats and 8 non-governmental seats filled the Kelantan State Legislative Assembly. The government side has 41 safe seats and 1 fairly safe seats, while the non-government side has a fairly safe seat.

• List of State Seats Representatives in Malaysia
• State legislative assemblies of Malaysia