Abstract: A bicycle passenger seat may include a mounting bracket adapted to be attached to an existing pole of an operator seat pole of an existing bicycle. A support frame may be pivotally attached to the mounting bracket and adapted to be selectively coupled to an axle of the rear wheel of the existing bicycle. A stud bolt is removably connected to the support frame. Passenger handles are removably attached to axially opposed ends of the stud bolt. A passenger seat may further be coupled to a posterior end of the support frame. The horizontal length of the support frame may be selectively adjustable along an x-axis while the vertical length may be selectively adjustable along a y-axis. In this manner, the combined weight of the operator and passenger is more evenly distributed so that a center of mass is forwardly spaced from the rear wheel of the bicycle.