William Augustus Norton (October 25, 1810 – September 21, 1883) was an civil engineer and educator. He was the president of Delaware College and later a founding faculty member of the Sheffield Scientific School at Yale University While at the University of the City of New York, Norton completed a college astronomy textbook known as An Elementary Treatise on Astronomy (Wiley & Putnam, 1839), which was re-issued in four editions. He was also the author of the First Book of Natural Philosophy and Astronomy (1858).