Orinduik Falls is a wide, multi-tiered series of cascades on the Ireng River, set within the Pakaraima Mountains on the Brazil-Guyana border.

The waterfall stands approximately 25 meters tall and stretches more than 150 meters across, making it a notably broad spectacle. The surrounding area is home to Macushi and Patamona communities, with several villages located nearby.

The name itself comes from the Patamona language: "orin" refers to an aquatic plant found in the river that locals harvest, dry, and chew like tobacco, while "duik" simply means falls.

Other waterfalls exist along the Ireng River, including the roughly 100-meter-tall Kurutuik Falls some 40 kilometers to the north, though difficult access keeps that site rarely visited.