Abstract: A motor mounting assembly for canoes and the like includes a clamping assembly extends athwartships at a point forwardly of the stern with a support member with end portions adapted to extend over and outwardly of the sides of the canoe, a clamping member adapted to engage under the gunwales of the canoe, and adjustable fasteners and to releasably draw the members together to clamp them to the canoe. At its aft end a transom mounting member extends generally in a vertical direction along the stem of the canoe and is adapted to support an outboard motor on its upper end. A pair of adjustable arms are secured to the support member of the clamping assembly and to the transom mounting member. A stabilizer is engaged with the transom mounting member and to the stem of the canoe. Adjustable arm stabilizers interconnect the arms intermediate their length and rigidify the assembly.