Charles Augustus Young (December 15 1834 – January 3 1908) was an American astronomer. He graduated from Dartmouth and later became a professor there in 1865, remaining until 1877 when he went to Princeton. He observed solar eclipses and worked on spectroscopy of the Sun. He was a successful educator. He wrote a popular and widely-used series of astronomy textbooks, including Manual of Astronomy. Many years later in 1927, when Henry Norris Russell, Raymond Smith Dugan and John Quincy Stewart wrote their own two-volume textbook, they entitled it Astronomy: A Revision of Young’s Manual of Astronomy.