Naftali Herz Tur-Sinai (Hebrew: נפתלי הרץ טור-סיני; born 13 November 1886 – 17 October 1973) was a Bible scholar, author, and linguist instrumental in the revival of the Hebrew language as a modern, spoken language. Tur-Sinai was the first president of the Academy of the Hebrew Language and founder of its Historical Dictionary Project.