Vincenz Hasak (b. Neustadt, near Friedland, Bohemia , 18 July 1812, d. 1 September 1889, as dean of Weisskirchlitz, near Teplice) was a Catholic historian. After completing his classical and theological studies in Litom ice, he became chaplain in Arnsdorf, a post he held for eighteen years. Thenceforth to his death he was pastor in Weisskirchlitz. While chaplain, he began to collect old books, paintings, and copper-plate engravings, also gems and shells. He succeeded in collecting a small but highly-esteemed museum. His library became particularly famous because of the copious collection of rare early printed books, e.g. the ten pre-Reformation German translations of the Bible.