Kota Bharu (Kelantanese: Koto Baghu), colloquially referred to as KB, is a town in Malaysia that serves as the state capital and royal seat of Kelantan. It is situated in the northeastern part of Peninsular Malaysia and lies near the mouth of the Kelantan River.
The town is home to many religious buildings, various museums, the unique architecture of the old royal palaces (still occupied by the sultan and sultanah and off-limits to visitors but viewable from outside) and former royal buildings (which can be visited). It is served by Keretapi Tanah Melayu's East Coast Line at the nearby Wakaf Bharu Terminal Station, in the town of Wakaf Bharu across the Kelantan River and Sultan Ismail Petra Airport, located in Pengkalan Chepa.