John Leventhal (born December 18, 1952) is a Grammy Award-winning musician, producer, songwriter, and recording engineer who has produced albums for William Bell, Michelle Branch, Rosanne Cash, Marc Cohn, Shawn Colvin, Rodney Crowell, Jim Lauderdale, Joan Osborne, Loudon Wainwright III, The Wreckers and many others.As a musician he has worked with these artists as well as Jackson Browne, Willie Nelson, Bruce Hornsby, Elvis Costello, Dolly Parton, Emmylou Harris, Charlie Haden, David Crosby, Levon Helm, Edie Brickell, Paul Simon, Patty Larkin, Susan Tedeschi, the Tedeschi Trucks Band, Steve Forbert, Kelly Willis, Donald Fagan, and Johnny Cash.As a songwriter he has had over 150 songs recorded by various artists.