Princess Melanie Marie Pauline Alexandrine von Metternich-Zichy (27 February 1832 in Vienna – 16 November 1919 in Vienna) was an Austrian aristocrat.^[1]

A member of the House of Metternich, she was the daughter of Austrian diplomat and politician Prince Klemens von Metternich and his third wife, Countess Melanie Zichy-Ferraris (1805–1854).^[1]

She married Count József Zichy de Zich et Vásonkeő (1814–1897), brother of Antónia Zichy, on 20 November 1853.^[2]

Not a traditional conservative like her father, Princess Melanie Metternich-Zichy played a role in founding the Christian Social Party (Austria). For example, in 1888, her palace was the site of a meeting of politicians who would eventually found the Christian Social Party; that meeting was attended by, among others, Karl Lueger and Karl Freiherr von Vogelsang.^[3]

French journalist Dominique Paoli claimed to have found evidence that Maxime Weygand was the illegitimate offspring of Belgian general Alfred van der Smissen and Mélanie Zichy-Metternich, lady-in-waiting to Empress Carlota. Paoli further claimed that Weygand had been born in mid-1865, not January 1867 as is generally claimed.^[4]