Christopher Lydon (born in Boston, Massachusetts, in 1940) is an American media personality and author. He is best known for being the original host of The Connection, produced by WBUR and syndicated to other NPR stations, and for Open Source (radio show), a weekly radio program on WBUR.
Lydon is a former journalist with The New York Times, and anchored The Ten-O'Clock News on WGBH in Boston, Massachusetts. After WGBH cancelled its nightly news program, he moved to WBUR, where in 1994 he became host of The Connection. In 2001, he and his longtime producer Mary McGrath were fired after a high-profile contract dispute with WBUR. McGrath's and Lydon's claim, rejected by the station, was that they, not WBUR, were the true creators of The Connection - moving it far beyond the initial WBUR template to become the successful, widely syndicated program.
During his tenure on The Connection, Lydon frequently discussed Internet topics, and his Radio Open Source blog became a launchpad for international broadcasts and other activities. While a fellow at Harvard Law School's Berkman Center for Internet & Society in 2003, Lydon began recording in-depth interviews focused on blogging and politics, posting the downloadable audio files as part of his blog. Bob Doyle (inventor) built an MP3 portable recording studio for Lydon. Dave Winer, also a Berkman Fellow, created an RSS enclosure feed for Lydon's MP3 interview files, an event credited with sparking the growth of podcasting.  He also launched the political site Bopnews (for "Blogging of the President") during the 2004 U.S. presidential campaign. 
On May 30, 2005, Lydon returned to the air on University of Massachusetts Lowell's radio station WUML and Boston's WGBH with a new show called Open Source, syndicated through Public Radio International. Including a blog and podcast, the program promised to "use blogs to be a show about the world." On October 16, 2006, the Lowell, Massachusetts newspaper The Sun announced that "Radio personality Christopher Lydon's lucrative and controversial contract with UMass Lowell to broadcast an hourlong radio show will not be renewed when it expires in December." Upon notice of the UMass Lowell discontinuance, Lydon began actively seeking new funders for the program. In November 2007, Lydon partnered with Brown University's Watson Institute for International Studies to continue producing Radio Open Source.
- Dan Kennedy (2009-03-06). "RADIO DRAMAS: Can this marriage be saved?". The Phoenix.
- "Radio Open Source with Christopher Lydon".
- Bob Doyle (2003-12-04). "Christopher Lydon's Portable Web Studio for Blogradio Productions".
- Walsh, Colleen (2011-10-27). "The podcast revolution: Two Berkman fellows helped to make it happen". Harvard Gazette. Retrieved 2013-03-07.
- Doyle, Bob. "Chris Lydon - The First Podcast". Retrieved 2013-03-07.
- The Blogging of the President at the Wayback Machine (archived August 10, 2006)
- "The Blogging of the President: 2004". Minnesota Public Radio.
- Robert Mills, Sun Staff (2006-10-16). "U-Mass Lowell drops Lydon". The Sun (Lowell). Archived from the original on 2006-10-26.
- "Launching 'Open Source at the Watson Institute'". Watson Institute for International Studies. 2007-11-19.
- "Boston Public Radio - WGBH News".
- Ed Siegel (2013-10-20). "Open Source".
- "Annual Report of the Election Department". Boston (MA) Election Department. 1994-07-01.
- Amanda Palmer (2002). "The Dresden Dolls - Lyrics". The Dresden Dolls.
- Radio Open Source
- Christopher Lydon Interviews...
- Kennedy, Dan (March 2005). "Lydon returns: A true original’s long exile finally comes to an end — but not without complications or controversy". The Boston Phoenix. Retrieved 2013-03-07.