Litner was previously president of SportsNet New York (SNY) and will represent Comcast on the SNY board.
He succeeds previous president and CEO Jack Williams, who launched Comcast's first regional sports network in Philadelphia in 1997.
Litner will report to Jeff Shell, president of Comcast Programming but remain in his current job until his successor has been appointed.
Williams will assume the title of chairman and serve as a part-time advisor to Shell and Litner.
Said Shell: “Jon has quickly built SportsNet New York into one of the most successful regional sports networks in the country. His proven experience in television, sports and operations make him the ideal new leader for Comcast SportsNet's rapidly expanding family of regional sports networks."
