Johnnie Ross Lynn (born December 19, 1956) is a former American football defensive back who played for the New York Jets in the National Football League from 1979 to 1986. He became a secondary coach after his playing career ended and is the current defensive backs coach for the Oakland Raiders. He previously coached for the Tampa Bay Buccaneers from 1994–1995, the San Francisco 49ers in 1996, the New York Giants from 1997–2001, the Baltimore Ravens from 2004–2005, the 49ers again from 2006–2010, and the Philadelphia Eagles in 2011. He was the defensive coordinator of the Giants from 2002–2003.