Tomimaru Okuni (大国 富丸, Ōkuni Tomimaru, born 1931) is a Japanese amateur astronomer and a discoverer of minor planets at the Nanyo Observatory (358), Yamagata prefecture, Japan.
[2] He is a prolific discoverer of asteroids, credited by the Minor Planet Center with a total of 130 discoveries between 1995 and 2000.
[1] The main-belt asteroid 7769 Okuni, discovered by Satoru Otomo at the Kiyosato Observatory in 1991, is named in his honour.
[2] Naming citation was published on 9 January 2001 (M.P.C.
41935).