Rentarō Taki (滝 廉太郎, Taki Rentarō, 24 August 1879 – 29 June 1903) was a Japanese pianist and composer of the Meiji era.

[1] Taki was born in Tokyo, but moved to many places during his childhood owing to his father's job.

[2] One of his famous pieces is "Kōjō no Tsuki" (Moon Over the Ruined Castle), which was included in the songbook for junior high school students, along with the "Hakone-Hachiri" (箱根八里).

[1][3] In the same year, Taki went to the Leipzig Conservatory in Germany for further studies, but fell seriously ill with pulmonary tuberculosis and therefore returned to Japan.

His posthumous work is a solo piano piece called "Urami" (憾, "Regret"), which he wrote four months before he died.