Born in 1936 in Kiel, Germany, Peter Horn studied at Muthesius College for Design and at Christian-Albrechts-University, both in Kiel, Germany. He taught Fine Arts at the High School level, and since 1970 has been Assistant Professor in the Institute of Art History, Department of Fine Arts Education, Christian-Albrechts-University at Kiel.
Horn started working in drawing, painting, and tapestry weaving in the 1950s and by 1971 was participating in numerous exhibitions. He has taken part in textile art symposia in Osterholz-Scharmbeck, Germany (1984/1996), Gdynia, Poland (1988/1991), Lódz, Poland (1992), Riga, Latvia (1993) and Graz, Austria (1994). In 1998 he was a member of the jury for the 9th International Triennale of Tapestry, Lódz, Poland. In 2001 he was the European member of the jury for the American Tapestry Alliance exhibit ATB IV. In 2004 he participated in the jury for KARPIT 2 (2005), Budapest, Hungary.