Celestino Piatti (1922–2007) was a Swiss graphic artist, painter, and book designer, born in Wangen near Zurich, Switzerland. The trained graphic artist was a popular illustrator of children’s books and gained international fame thanks to the more than 6,300 book titles that he designed for Deutscher Taschenbuch Verlag (DTV) from 1961 onwards. Piatti also designed posters, postage stamps, stained glass, murals, and iron sculptures, and he worked as a writer and caricaturist. His work has received several awards. Although he used a wide variety of techniques, his style—black outlines and vivid colors—was always unmistakable.