Charles Alan Pownall (October 4, 1887 – July 19, 1975) was a Rear Admiral in the United States Navy and Governor of Guam (May 30, 1946 – September 27, 1949). He was the third military Governor and first naval Governor of Guam following the United States recapture of the island from the Japanese. After conflict with the Guam Congress in 1948, Pownall replaced many Congressmen with his own appointments, whom the Guamanians refused to recognize. The ensuing protest persuaded Truman to transfer control of the island away from the Navy. As a consequence, Charles Pownall was the last military governor of Guam.