John Marshall (October 2, 1945 – November 2, 2021) was an American football coach.
He earned two Super Bowl rings during his time with the San Francisco 49ers, where he was an assistant.
Marshall coached linebackers for the Detroit Lions in 2002, where he was on the staff of Marty Mornhinweg.
Marshall had previously served as defensive coordinator under Steve Mariucci with the San Francisco 49ers in 1997 and 1998.
This biographical article relating to a college football coach first appointed in the 1960s is a stub.