John Sipher is a former American intelligence officer who served 28 years in the Central Intelligence Agency's National Clandestine Service, retiring in 2014 as a member of the Senior Intelligence Service. He is from Cortland, New York. He served as station chief in Serbia following the overthrow of Slobodan Milošević in 2000 and as station chief in Moscow. Since retirement, Sipher has worked as a foreign policy commentator and is a nonresident senior fellow at the Atlantic Council. He serves as a senior adviser to the Lincoln Project, The Steady State, and the Council on American Security.