Wagner János received his diploma from the Hungarian Collage of Fine Arts in 1962. He was the student of Fónyi Géza, Szőnyi István and Domanovszky Endre. From 1977 until 1983 he taught at the School of Window Dressing, in 1983-96 at the Secondary School of Fine- and Applied Arts. He did field trips to several countries among them to Vietnam. He is the member of the board of the Association of Fine- and Applied Artists, the co-president of the Association of Hungarian German Artists, and member of the Society of Hungarian Aquarelle Painters.