Dennis F. Coughlin (January 1844 – May 14, 1913) was an American professional baseball player who played as an outfielder during the 1872 season for the Washington Nationals in the National Association.

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Coughlin is remembered as the only major leaguer who was wounded in combat in the Civil War. He was a sergeant in Company E, 140th New York Infantry. After his time in baseball, he worked in the U.S. Treasury Department for 45 years.