Adolf Klein (15 August 1847 – 11 March 1931) was an Austrian actor and theatre director. Klein appeared in around sixty films, mainly during the silent era. He appeared in a number of the epics made by the German film industry during the early 1920s such as his role as Cardinal Wolsey in Ernst Lubitsch's Anna Boleyn (1920).^[1]

• Dr. Hart's Diary (1917)
• The Mirror of the World (1918)
• The Seeds of Life (1918)
• Veritas Vincit (1919)
• The Panther Bride (1919)
• The Loves of Käthe Keller (1919)
• Anna Boleyn (1920)
• The Secret of the Mummy (1921)
• Lady Hamilton (1921)
• Ilona (1921)
• The Adventuress of Monte Carlo (1921)
• The Amazon (1921)
• The Inheritance of Tordis (1921)
• The Maharaja's Favourite Wife (1921)
• The Passion of Inge Krafft (1921)
• The Women of Gnadenstein (1921)
• The Three Aunts (1921)
• Phantom (1922)
• Fridericus Rex (1922)
• The Black Cover (1922)
• Frauenmoral (1923)
• The Last Battle (1923)
• Rivals (1923)
• Judith (1923)
• The Hungarian Princess (1923)
• Carlos and Elisabeth (1924)
• Strong Winds (1924)
• A Free People (1925)
• Bismarck (1925)
• Wood Love (1925)
• Shadows of the Metropolis (1925)
• Shadow of the World City (1925)
• The City of Temptation (1925)
• Maytime (1926)
• The Great Duchess (1926)
• Bismarck 1862–1898 (1927)
• 1914 (1931)