Kimura Buzan (木村武山) (3 July 1876 – 29 November 1942) was a Japanese Nihonga painter associated with the Nihon Bijutsuin.

In 1896 he graduated from the Tokyo School of Fine Arts and in 1898 was involved in the foundation of the Nihon Bijutsuin.

After serving in the infantry during the Russo-Japanese War, in 1906 along with Okakura Tenshin, Yokoyama Taikan, Shimomura Kanzan, Hishida Shunsō and the Nihon Bijutsuin, he moved to Izura, now Ibaraki.

The following year he contributed The Destruction of the Epang Palace by Fire to the First Bunten Exhibition.

In 1914 he was involved in the revival of the Nihon Bijutsuin, dissolved upon Okakura Tenshin's death the year before.