Idu or IDU may refer to:Indoor unit of an Australian National Broadband Network fixed wireless connection, see NTD (NBN) International Democracy Union, an international alliance of conservative political parties Idu, Iran, a village in Razavi Khorasan Province, Iran Idu, Abuja, a neighbourhood of Abuja, Nigeria Idu script, archaic writing system that represents the Korean language using hanja Idu Mishmi language, the language of the Idu Mishmi people Hongcheon Idu FC, South Korean football club...