The Ioniveyem (,Словарь названий гидрографических объектов России и других стран — членов СНГ , Federal Service for Geodesy and Cartography of Russia, 1999, p. 149 also Ионивээм Ioniveem, Yeni-Veyem and Yoniveem) is a river located in the Chukotka Peninsula in Far East Siberia, Russia. It flows northwards into the Kolyuchinskaya Bay, Chukchi Sea. It is long, and has a drainage basin of .
Mount Ioni and Ioni lake are located close to it to the east in mid course.
This river and its basin belong to the Chukotka Autonomous Okrug administrative region of Russia.
References
Geographic Location Northeast Asia in the Late Pleistocene and Early Holocene Hydrographic and Environmental data Biological imaging