Abstract: An adjustable weight kettlebell which allows a user to easily adjust the overall weight. The kettlebell includes a handle, a grasping hole, a central shaft, a locking mechanism, a stopper plate, a shaft-receiving tube, a locking collar, and an at least one weight plate. The grasping hole traverses through the handle. The shaft-receiving tube is perimetrically connected to the handle, perpendicular to the grasping hole. The central shaft is concentrically attached within the shaft-receiving tube by the locking mechanism, wherein the locking mechanism is mechanically integrated between the shaft-receiving tube and the central shaft. The central shaft retains and support the weight plate. The central shaft traverses through a mounting hole of the weight plate. The stopper plate is normally connected to the central shaft, opposite the handle, to retain the weight plate. The locking collar secures the weight plate in place and is slidably engaged to the central shaft.