The three volumes of the series “The Mandala in Nichiren Tradition” were published be-tween 2013 and 2015 and successively revised with additions and corrections. This fourth volume concludes the series on “The Mandala in Nichiren Tradition” and is mainly intended as a photographic reference to further study the immense extant mandalic corpus produced over eight centuries. For those who are unfamiliar with the Nichiren mandala, it is recommended to study the contents of the previous three volumes.