Abstract: A baseball batting swing trainer teaches proper bat swinging and ball hitting technique. The swing trainer includes a first handle attached to the first end of a shaft. The second end of the shaft includes a head having a diameter greater than the shaft diameter and less than the diameter of the head of a conventional baseball bat. A cylindrical second handle slidable between the first and second shaft ends. The second handle is sized to accommodate all five fingers on one of the user's hands in a batting grip. A process for teaching a person the proper technique for swinging a baseball bat using the swing trainer is also provided. When performed properly, the process produces an audible sound by striking the second handle against the stop while the head of the bat is passing through the user's strike zone and directly over the user's forward foot.