René Sieffert (4 August 1923 – 13 February 2004) was a French japanologist, professor at the Institut national des langues et civilisations orientales (INALCO).
René Sieffert translated many works and helped bring Japanese literature to French-speaking readers.
Also, in 1971, when he was president of INALCO, he created with his wife Simone, the university press Publications orientalistes de France (POF).