| Toshihiko Izutsu | |
| Native Name: | 井筒 俊彦 |
| Native Name Lang: | jp |
| Birth Date: | 4 May 1914 |
| Birth Place: | Tokyo, Japan |
| Death Place: | Kamakura, Japan |
| Known For: | His translation of the Qurʾān into Japanese |
| Education: | Keio University |
| Influences: | Junzaburo Nishiwaki |
was a Japanese scholar who specialized in Islamic studies and comparative religion. He took an interest in linguistics at a young age, and came to know more than thirty languages, including Arabic, Hebrew, Turkish, Persian, Sanskrit, Pali, Hindustani, Russian, Greek, and Chinese. He is widely known for his translation of the Qurʾān into Japanese.
He was born on 4 May 1914 into a wealthy family in Tokyo, Japan. From an early age, he was familiar with zen meditation and kōan, since his father was also a calligrapher and a practising lay Zen Buddhist. He entered the Faculty of Economics at Keio University, but transferred to the Department of English literature wishing to be instructed by Professor Junzaburō Nishiwaki. Following his bachelor's degree, he became a research assistant in 1937.
In 1958, he completed the first direct translation of the Quran from Arabic into Japanese (the first indirect translation had been accomplished a decade prior by Okawa Shumei). His translation is still renowned for its linguistic accuracy and widely used for scholarly works. He was extremely talented in learning foreign languages, and finished reading the Quran a month after beginning to learn Arabic. Between 1969–1975, he became professor of Islamic philosophy at McGill University in Montreal, Quebec (Canada). He was the professor of philosophy at the Iranian Research Institute of Philosophy, formerly Imperial Iranian Academy of Philosophy, in Tehran, Persia. While in Iran he worked and collaborated with Seyyed Hossein Nasr, William Chittick, Peter Lamborn Wilson and others. He came back to Japan from Persia after the Islamic Revolution in 1979, and he wrote, seemingly more assiduously, many books and articles in Japanese on Eastern philosophy and its significance.
In understanding Izutsu's academic legacy, there are four points to bear in mind: his relation to Buddhism, particularly Zen Buddhism, his interest in language, his inclination towards postmodernism, and his interest in comparative philosophy.
In Sufism and Taoism: A Comparative Study of Key Philosophical Concepts (1983) he compared the metaphysical and mystical thought-systems of Sufism and Taoism, and asserted that, although historically unrelated, these two traditions share similar features and patterns.
He died in Kamakura on 7 January 1993.