The Ngajanji, also written Ngadyan, and Ngadjon-Jii are an Indigenous Australian people of the rainforest region south of Cairns, in northern Queensland. They form one of 8 groups, the others being Yidin, Mamu, Dyirbal, Girramay, Warrgamay, Waruŋu and Mbabaram, of the Dyirbal tribes.