Krayan is a district in Nunukan Regency, North Kalimantan, Indonesia. It is located on the west side of Nunukan Regency and borders the state of Sabah and Sarawak in Malaysia. The district consists of 65 villages, while the main town is Long Bawan. The population is estimated to be 6,824 in 2014, and the majority are of the Lundayeh ethnic group.