Revells Falls is a waterfall on the Watts River within Maroondah Reservoir Park, located near Healesville in Victoria's Yarra Valley, roughly 70 kilometres east of Melbourne.

The falls are fed by the spillway of Maroondah Dam, a gravity dam completed in 1927, and cascade down into the river below the dam wall.

Flow is directly tied to rainfall, and the falls are at their most impressive after periods of heavy rain; in drier spells they may reduce to little more than a trickle.

The best vantage point is Revells Falls Lookout at the base of the waterfall, where visitors can get close enough to feel the spray.

A footbridge crossing the spillway at the top of the dam wall offers an additional perspective looking down over the cascading water.

Spring is considered a prime time to visit, when rainfall is more reliable and the surrounding park's flowering shrubs are in bloom.