Louis Woodard Emerson (July 25, 1857 – June 10, 1924) was a U.S. Representative from New York.

Born in Warrensburg, New York, Emerson attended the district schools, and was graduated from Warrensburg Academy.

He engaged in the lumber, banking, and manufacturing business.

He resumed former business activities in Warrensburg, New York, and died there June 10, 1924.

State Senator James A. Emerson was his brother.