Rinzō Nakao (known professionally as Nakao Tozan, 中尾都山, October 5, 1876 in Ōsaka prefecture to October 10, 1956 in Kyōto, aged 80), was the founder of the most important school of shakuhachi playing in late-nineteenth to mid-twentieth-century Japan and was both a performer and prolific composer. His influence continues to the present day.