Jones Falls Dam is a dam on the Rideau Canal located in Rideau Lakes, Leeds and Grenville United Counties, Ontario, Canada, that was built between 1828 and 1831 to tame the mile-long series of rapids and falls that flowed from Sand Lake and into the White Fish River (now drowned).

The dam was built at the head of a bedrock canyon, located part way up the rapids, a location that allowed the arch shape of the stonework of the dam to lock into the bedrock of the canyon walls.

In 1827, a road was built from the quarry to Jones Falls, in order to haul the stones to be used for the dam and the locks.

It was created by hauling rubbish (earth) material using horse drawn carts from a location just to the west of the dam.

When completed, the dam raised the water in its location by 13.7 m (45 ft), putting a navigation depth of water into the upper sill of the top lock at Jones Falls and also into the lower sill of Davis Lock, at the head of Sand Lake, which was raised by 2.4 m (8 ft) due to the dam at Jones Falls.

It was the completion of the dam that created a navigation depth of flooding into those locks.