The Oxtongue Lake Boat Ramp is a public concrete-slab launch located at 1686 Harris Road in the Township of Algonquin Highlands, Ontario.

It provides access to Oxtongue Lake, a deep, largely sandy-shored lake that connects Algonquin Provincial Park to Lake of Bays. A parking area is available on site.

The lake itself reaches a maximum depth of around 27 meters, though its south end is notably shallower. Paddlers launching here can explore numerous inlets along the shoreline, and the surrounding crown land supports abundant wildlife.

The closest towns are Dwight, Dorset, and Huntsville.