日本水墨院は、文化勲章受章など数々栄誉を受けられ、水墨画界の重鎮であった松林桂月の高弟であり、日展会友・社団法人日本南画院の副理事長として活躍された大平華泉の門下生により 1985年に設立された。

日本における水墨画は、13世紀末頃に中国より日本に伝えられた。爾来、様々な画人が関わって、水墨画（墨絵）の発展に努め、の南画（南宗画）に対し、日本独自の墨絵芸術が花開いた。

日本水墨院は、東洋絵画における水墨画の高い精神性の伝統を守り、且つ、個性溢れる自由な表現を旨とする現代水墨画の創造を目指して活動している。その間、全国各地よりこの主旨に賛同される水墨画家達が参画され、展覧会や研修会を行っている。

（日本水墨院展 目録より）

Nihon-Suibokuin, which is one of the groups of artists of the Suibokuga (ink wash painting), was established in 1985 by the leading followers of Mr. Kasen Ohhira, who was a main follower of Mr. Keigetsu Matsubayashi, who gained various glories such as Order of Culture and Persons of Cultural Merit etc. and was a super eminent leader in this field. Mr. Kasen Ohhira flourished as a vice president of Nihon Nangain and an associated member of Nitten, which is the most canonical exhibition of the arts in Japan.

Suibokuga (or Sumie) was introduced to Japan from China around the end of 13 century, since then many painters participated in developing this art and through many years Japanese original style of the Suibokuga blossomed.

Keeping the tradition of lofty spirit of Suibokuga in the oriental arts and respecting individuality of each painter with unrestrained expression, we are making our effort to create modern Suibokuga (ink wash painting).

Meanwhile, those painters from all parts of Japan who agree with the purpose of Nihon-Suibokuin, take part in it and hold exhibitions or workshops.