Richard Christopher Mangam (December 21, 1841 – November 18, 1893) was a Private in the United States Army and a Medal of Honor recipient for his role in the American Civil War.

Medal of Honor citation Rank and organization: Private, Company H, 148th New York Infantry. Place and date: At Hatchers Run, Va., April 2, 1865. Entered service at: ------. Birth: Ireland. Date of issue: September 21, 1888.

Citation:

Capture of flag of 8th Mississippi Infantry (C.S.A.).

See also List of American Civil War Medal of Honor recipients: M–P

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