Morgan B. Williams (September 17, 1831 – October 13, 1903) was a coal industry executive and politician who served as a Republican member of the U.S. House of Representatives for Pennsylvania's 12th congressional district from 1897 to 1899.

He was appointed superintendent for the Lehigh & Wilkes-Barre Coal Co., and held that position for fourteen years.

In 1878, Williams, along with George and Fred Parrish, founded the Red Ash Coal Company.

He was head of the Williams Coal Co. in Pottsville, Pennsylvania, worked as president of the Grenville Graphite Company in Canada, vice-president of the Wilkes-Barre Deposit and Savings Bank, as a director of the Spring Brook Water Supply Company and had financial interests in Vulcan Iron Works.

[2] He was a member of the Wilkes-Barre school board and the city council for twelve years.