Ludwig Denig (1755 - 1830) was an American folk artist. A native of Lancaster, Pennsylvania, he became a member of the Reformed Church, whose congregational school he attended. He served in the American Revolution and worked as a shoemaker before, in 1787, moving to Chambersburg, Pennsylvania and taking up work as an apothecary. Denig's book was published in 1990 as The Picture-Bible of Ludwig Denig: A Pennsylvania German Emblem Book. At the time it was owned by Esther Ipp Schwartz, who had offered it to folklorist Don Yoder for study.