Hirase Sakugoro (?????, February 12, 1856 – January 4, 1925) was a Japanese botanist and painter.
Born into a samurai family in Fukui, Hirase discovered the spermatozoids of the ginkgo in January 1894, before Seiichiro Ikeno discovered the spermatozoids of the cycad.He is a laureate of the Imperial Prize of the Japan Academy(1912).