There are always changes  to the offensive and defensive schemes, especially when new coaches come in.  We accumulated a list with each coach and scheme:

NFL Team Head Coach (Tenure) Offensive Scheme Defensive Scheme
Arizona Cardinals Ken Whisenhunt (4) Balanced 3-4, multiple front
Atlanta Falcons Mike Smith (3) Run Heavy 4-3
Baltimore Ravens Jim Harbaugh (3) Run Heavy 3-4, multiple front
Buffalo Bills Chan Gailey (1) Balanced 3-4, multiple front
Carolina Panthers John Fox (9) Run Heavy 4-3, Tampa-2
Chicago Bears Lovie Smith (7) Pass heavy 4-3, Tampa-2
Cincinnati Bengals Marvin Lewis (8) Run Heavy 4-3
Cleveland Browns Eric Mangini (2) Run Heavy 3-4
Dallas Cowboys Wade Phillips (4) Pass Heavy 3-4
Denver Broncos Josh McDaniels (2) Spread 3-4
Detroit Lions Jim Schwartz (2) Pass Heavy 4-3
Green Bay Packers Mike McCarthy (5) West Coast 3-4
Houston Texans Gary Kubiak (5) West Coast 4-3
Indianapolis Colts Jim Caldwell (2) Pass Heavy 4-3, Tampa-2
Jacksonville Jaguars Jack Del Rio (8) Balanced 4-3
Kansas City Chiefs Todd Haley (2) Spread 3-4
Miami Dolphins Tony Sparano (3) Balanced 3-4
Minnesota Vikings Brad Childress (5) West Coast 4-3,Tampa-2
New England Patriots Bill Belichick (11) Spread 3-4, multiple front
New Orleans Saints Sean Payton (5) Balanced 4-3
New York Giants Tom Coughlin (7) Balanced 4-3
New York Jets Rex Ryan (2) Run Heavy 3-4, multiple front
Oakland Raiders Tom Cable (2) Run Heavy 4-3
Philadelphia Eagles Andy Reid (11) West Coast 4-3
Pittsburgh Steelers Mike Tomlin (4) Run Heavy 3-4
St. Louis Rams Steve Spagnuolo (2) West Coast 4-3
San Diego Chargers Norv Turner (4) Pass Heavy 3-4
San Francisco 49ers Mike Singletary (2) Balanced 3-4, multiple front
Seattle Seahawks Pete Carroll (1) Balanced 4-3
Tampa Bay Buccaneers Raheem Morris (2) Balanced 4-3
Tennessee Titans Jeff Fisher (17) Run Heavy 4-3
Washington Redskins Mike Shanahan (1) West Coast 3-4