Marvin Leonard Kalb is an American journalist. He was the founding director of the Shorenstein Center on Media, Politics and Public Policy and Edward R. Murrow Professor of Press and Public Policy from 1987 to 1999. The Shorenstein Center and the Kennedy School are part of Harvard University. Kalb is currently a James Clark Welling Fellow at George Washington University and a member of the Atlantic Community Advisory Board. He is a guest scholar in foreign policy at the Brookings Institution.

The Murrow Boys, or Murrow's Boys, were the CBS radio broadcast journalists most closely associated with Edward R. Murrow during his time at the network, most notably in the years before and during World War II.