The Canonto Lake Boat Ramp is a public boat launch located at 2465 Canonto Road near the village of Ompah in North Frontenac Township, Ontario.

It sits within the Palmerston Canonto Conservation Area, positioned at the dam between Canonto and Palmerston Lakes, where Palmerston Lake feeds into Canonto before it drains to the Clyde River.

The surrounding area is notably undeveloped — roughly 91% of the shoreline remains in natural condition and there is no marina on the lake.

The conservation area also features a network of hiking trails with scenic views and an elevated lookout point, making the site a useful base for both boaters and hikers exploring this remote corner of Frontenac County.