Franz Metzner (18 November 1870, Wscherau, near Pilsen – 24 March 1919, Berlin) was an influential German sculptor, particularly his sculptural figures integrated into the architecture of Central European public buildings in the Art Nouveau / Jugendstil / Vienna Secession period. His style is difficult to classify.
Metzer learned the craft of stone-cutting in Breslau with Christian Behrens and did apprenticeships in Saxony through 1894. He founded his own studio in Berlin in 1896 and worked predominantly for the royal porcelain factory until 1903, and became a professor at the Vienna college of arts and sciences. Metzner achieved notoriety by winning a Gold Medal at the Paris Exposition Universelle (1900).
Among his important works are the sculptures for Josef Hoffmann's 1904–1911 landmark Art Deco Palais Stoclet in Brussels, including the eccentric four green male nudes at the summit of the building. The Palais Stoclet is an example of "Gesamtkunstwerk", the integration of art and architecture, one of the goals of Jugendstil.