Mark Harris (January 27, 1779 – March 2, 1843) was a United States representative from Maine.
He attended the common schools, then moved to Portland, Maine (then a district of Massachusetts) in 1800.
He held several local offices, and was elected as a Democratic-Republican to the Seventeenth Congress to fill the vacancy caused by the resignation of Ezekiel Whitman.
Harris resumed mercantile pursuits, then was elected a member of the Maine House of Representatives in 1830.
He moved to New York City in 1842 and engaged in mercantile pursuits there, where he died on March 2, 1843.