Thierry Frères (c. 1827 - 1865) was a Paris base lithography house active in the mid-19th century. In 1827 they were located at Cité Bergère No 1 à Paris. The firm is generally considered to by the successor to Engelmann et Cie. The firm was superbly skillful and prolific, being among the dominant fine-art lithographers in Paris - despite the fact that their firm, operations, and even the full names of the founders are shrouded in obscurity.