Joseph-Théodore Deck (2 January 1823 – 15 May 1891) was a 19th-century French potter. Born in Guebwiller, Haut-Rhin, he began learning the trade in his early 20s, moving to Paris at age 24. In 1856 he established his own faience workshop, Joseph-Théodore Deck Ceramique Française, and began to experiment Islamic style of ceramic making, and in particular the Iznik style. In the 1880s he also worked in the Chinese tradition, also collaborating with Raphaël Collin, and other artists of the time. He died in Paris.
In 1887 he published a treatise under the title La Faïence, which is available in facsimile online.
Japanese inspired plate, ca. 1875, Walters Art Museum, Baltimore
Vase, signed by Joseph-Théodore Deck
Plate, decorated by Paul Helleu, 1884, Musée Unterlinden, Colmar
Egyptian-style faïence cat,
Musée Théodore Deck, Guebwiller
Plate, decorated by Joseph Victor Ranvier, ca. 1870s, Musée Unterlinden, Colmar
Faïence vase, ca. 1870s, Musée Unterlinden, Colmar
Japanese inspired plate, ca. 1875, Musée Unterlinden, Colmar
Tile, decorated by Joseph Victor Ranvier, ca. 1870s, Musée Unterlinden, Colmar
Plate, decorated by Raphaël Collin, Indianapolis Museum of Art