Mirza Mohammad Taher Vahid Qazvini (Persian: محمد‌طاهر وحید قزوینی; died 1700), was an Iranian bureaucrat, poet, and historian, who served as the grand vizier of two Safavid monarchs, Shah Suleiman (r. 1666–1694) and the latter's son Soltan Hoseyn (r. 1694–1722) from 1691 to 1699.

[a] He was of Persian Sayyid ancestry,[4] and belonged to a family that was notable for occupying the office of vaqa'i-nevis (court registrar).

[7] Taher Vahid, as well to a lesser degree the court steward (nazer) Najafqoli Khan, were the main counselors of Soltan Hoseyn during his early reign.

Based on Taher Vahid's writings, the modern historian Sunil Sharma comments that "it is evident that his role in the intellectual and literary life of seventeenth-century Persianate circles was not at all insignificant.

"[12] Hamid Dabashi lists Taher Vahid amongst some of the leading Iranian poets of the Indian style who had never visited India, along with Shafi'i Mashhadi, Asir-e Esfahani and Shaukat Bukhari.