Robert Sprague Beightler (March 21, 1892 – February 12, 1978) was an American military officer and Ohio political insider, engineer, and business owner. In the military, he reached the rank of major general, and served as military Governor of Okinawa, War Department General Staff, and as commander of the 37th Infantry Division, the only National Guard General to lead his troops through training and into battle during World War Two. In political activities in Ohio, he served as head of the Ohio State Highway Department, President of the Army Personnel Board, Executive Director and board member of the Ohio Turnpike Commission.