Idalia National Park - In central western Queensland, Idalia National Park protects extensive mulga woodlands, the headwaters of the Bulloo River, and tributaries of the Barcoo River system.

Iron Range National Park - Long sweeping beaches, rocky outcrops, the largest area of lowland tropical rainforest in Australia and rugged, heath-covered ranges are significant features of this remote park on Cape York Peninsula.

Isla Gorge National Park - At the southern end of the Dawson Range, Isla Gorge National Park protects spectacular sandstone scenery in the central highlands.