Dudley Walker Morton (July 17, 1907 – October 11, 1943), nicknamed "Mushmouth" or "Mush", was a submarine commander of the United States Navy during World War II.
He was commander of the USS Wahoo (SS-238) during its third through seventh patrols.
Wahoo was one of the most-celebrated submarines of World War II, as it sank at least 19 Japanese ships, more than any other submarine of the time.