Platen is a German-language surname. People with the surname include:
Angelika Platen (born 1942), German photographer August von Platen-Hallermünde (1796-1835), German poet and dramatist Baltzar von Platen (inventor) (1898–1984), Swedish inventor Dubislav Friedrich von Platen (1714–1787), Prussian officer in Frederick the Great's army Filip Julius Bernhard von Platen (1732–1805), Swedish-German politician and field marshal Flockina von Platen (1903–1984), German actress Carl Constantin Platen (1843– 1899, German naturalist and collector