Abstract: A floating transom extension assembly is disclosed. The present invention provides a transom extension assembly for adjustably positioning an outboard motor upon a boat, comprising a floating transom extension, a motor mounting plate slidably coupled to the transom extension, apparatus for mounting the transom extension to the stern of the boat, apparatus for mounting the outboard motor to the motor mounting plate, and apparatus for adjusting the position of the motor mounting plate relative to the transom extension. In an alternative embodiment, the transom extension assembly further comprises a platform extending outwardly over the sides and rearwardly in a U-shape around the motor providing easy access to the motor and further providing the convenience of a stern mounted platform for entry into and exit from the stern of the boat. In a further alternative embodiment, the transom extension assembly is configured for more than one outboard motor attached to the stern of the boat.