William Schaus (fl. c. 1857 - 1870) was printmaker active in New York City in the middle part of the 19th century. Schaus began his career in Paris with the established "Goupil, Vibert & Company". Around 1857 he was sent to New York to establish an American branch of the French firm as well as to set up an International Art Union to compete with the powerful American Art Union. Schaus, with his considerable experience and support from abroad, was able to lure several important artists away from the American Art Union. This helped him to develop an impressive portfolio of artists and prints. In the early 1860 Schaus split with Goupil Vilbert & Co. to establish his own offices at 629 Broadway, in New York City. There he continued to produce a varied corpus of works that included maps, views, art prints, and illustrations.