Johann Conrad Werdmüller (10 November 1819, Zürich - 3 September 1892, Freiburg im Breisgau) was a Swiss illustrator and engraver.
He was the only son of Salomon Werdmüller and his wife Margarethe, née Bertschinger.
After finishing school, he served an apprenticeship with Georg Christoph Friedrich Oberkogler (1774-1856), an engraver.
Upon completing his training there, he made copies of a large cycle of murals in the cloister of Töss Monastery, on behalf of Ludwig Schulthess [de], an engineer who wanted to preserve them before the cloister was demolished.
[1] After 1838, he continued his education at the Academy of Fine Arts, Munich, where he became friends with Gottfried Keller, whose works he would later help illustrate.