Duduma Waterfalls, Waterfall in Koraput district, India.

Duduma Waterfalls is a horsetail waterfall on the Machkund River, dropping 175 metres (574 ft) on the border of Koraput district, Odisha, and Visakhapatnam district, Andhra Pradesh. It has two sub-waterfalls, one on the Odisha side and the other on the Andhra Pradesh side. The water falls in a single broad sheet over dark, wet rock, breaking into spray and widening into a translucent curtain near the base, where it pours onto stepped ledges and churns into pale foam. A massive dark rock face rises to the right, and a steep rocky slope flanks the left.

The falls have formed a natural border between Odisha and Andhra Pradesh since the states were separated in the mid-20th century. A hydroelectric station was built downstream in the following decades to supply power to the surrounding region.

The Bonda, Gadaba and Paraja tribes live near the falls, and Machkund is a pilgrimage destination. Visitors may see tribal communities in the area around the waterfall.

Forest trails from Borigumma lead to the falls, though paths can become slippery during and after the monsoon rains. June to September brings the heaviest water flow, while other months show calmer conditions.

A hydroelectric project below the falls uses the water to generate electricity for Odisha and Andhra Pradesh. Despite the technical installation, the waterfall retains its natural appearance and continues to draw visitors seeking the sight of the falling water.