Abstract: A splash guard assembly having an attachment mechanism in the form of a collar. The collar is adapted to fit around a portion of a ball mount or receiver hitch of a trailer hitch. A generally horizontal extending structure is attached to the collar and has splash guards operationally attached to its distal ends. The generally horizontal extending structure can be an integral horizontal bar or a series of bars fixedly or adjustably disposed with respect to the collar. The generally horizontal extending structure can include bent portions allowing the splash guards to be connected to the structure at a different vertical position than that of the collar. The collar can be made of any design that allows a firm connection with the ball mount or receiver hitch. The attachment mechanism can alternatively take the form of a generally horizontal plate adapted to be attached to a bumper of the vehicle.