Ioniveemkuyim – an inlet in the southeast section of Kolyuchinskaya Bay, to the east of Kuetkuyyim Inlet, Chukotka Autonomous Okrug, Russia. The Ioniveem and Ulveem rivers flow into it. Ioniveemkuyim is one of the inlets that form the bay. Inlet coast is prevalently flat, sandy, or loamy and here and there steep. Coasts are swamped in many places and enclosed by foreshores in the south of the inlet. Two rivers flow into the head of the inlet. The Ioniveemkuyim River is the eastern one. Depth at inlet debouchure is 7–8 m. A trench 5–7 m deep stretches 25 km into the inlet.