Daniel al-Kumisi (? in Damagan, Tabaristan – 946, in Jerusalem) was one of the most prominent early scholars of Karaite Judaism. He flourished at the end of the ninth or at the beginning of the tenth century. He was a native of Damagan, the capital of the province of Qumis, in the former state of Tabaristan, (present-day Semnan province of Iran), as is shown by his two surnames, the latter of which is found only in "Qirqisani". His attitude to Anan ben David and his violent opposition to the Ananites (i.e., the first Karaites, Anan's followers and immediate successors) are characteristic of his place in Karaism. At first he esteemed Anan highly, calling him "rosh hamaskilim" ("chief of the scholars"); but later he despised him and called him "rosh ha-kesilim" ("chief of the fools"). Nevertheless, Daniel's opinions were respected by the Karaites.