John Mack (1843 – November 10, 1881) was a Seaman in the United States Navy and a Medal of Honor recipient for his role in the American Civil War.
He is buried in Saint Mary's Cemetery in Lynn, Massachusetts. His grave can be found in Section 6, Row 6, Lot 18.
Rank and organization: Seaman, U.S. Navy. Born: 1843, Maine. Accredited to: Maine. G.O. No.: 59, June 22, 1865.