Manfred Kielnhofer attended the Technical College in Linz where he took his final exam in 1995. Since 2000 he has lived as an artist in Linz. In 2005 he launched Gallery Artpark in Linz, and one year later he launched Gallery Fotopark. Kielnhofer has had his art in public places like ancient castlers, old mines, main squares or in parks. He received in 2005 the Stipend of the county of Upper Austria, of the Studio in the Egon Schiele Art Center Krumlov CZ.