The Atle Selberg papers consist of the mathematical papers, professional correspondence, and personal materials of Norwegian mathematician Atle Selberg. The majority of the papers document Selberg's work following his emigration to the United States and appointment to the Institute for Advanced Study Faculty from approximately 1951-2007. Select items from Selberg's early life as well as honors, awards, and remembrances following his passing in 2007 are also included in the collection.