Nilotho, guruhi khalqhoi khesh, ki dar havzahoi boloi va miyonai Nil, sohilhoi daryohoi Bahruljabalu Sobati Respublikai Sudon, dar hududi bayni kulhoi Viktoriya va Rudolfi Ugandayu Keniya, dar Tanzaniya, inchunin rayonhoi sarhadii Respublikai Zair, Efiopiya va Respublikai Misri Arab (RMA) zindagi mekunand. Shumoraashon dar Respublikai Sudon beshtar az 4 million nafar (1970), Keniya taqriban 2,5 million Uganda qarib 2 million, Tanzaniya taqriban 0,3 million, Respublikai Zair ziyoda az 0,2 million, RMA 0,3 million va dar Efiopiya 0,1 million nafar .Nilotho ba zabonhoi lotini gap mezanand, madaniyati moddiyu manaviashon ba ham khele nazdik.
Az rui alomathoi zaboni Nilotho ba du guruh judo meshavand: 4) dinka, nuer, luo, joluo; 2) bari, lotuko, teso, masai, nandi, suk, tatog; gayr az in nubiho va nubihoi kuhistoniro bazan ba Nilotho nisbat medihand. Aksariyati dindoron ba rasmu oinhoi dinhoi mahalli etiqod dorand, qismi digar (nubiho, luo)—musulmonand. Mashguliyati asosiashon — parvarishi chorvoi kaloni shokhdor, dehqoni, mohigiri va shikor.