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Nuno Álvares Pereira de Melo
Duke of Cadaval Marquis of Ferreira Count of Tentúgal
Born	4 November 1638
Died	29 January 1725(1725-01-29) (aged 86)
Spouse	Maria de Faro Maria Angélica Henriqueta of Lorraine Marguerite of Lorraine
Father	Francisco de Melo, 3.º marquês de Ferreira [pt]
Mother	Joana Pimentel

Nuno Álvares Pereira de Melo, 1st Duke of Cadaval, 4th Marquis of Ferreira, 5th Count of Tentúgal (4 November 1638 – 29 January 1725), was a Portuguese nobleman and statesman.

Nuno was a general in the Portuguese Restoration War, which earned him prestige and achieved himself the title of Duke of Cadaval. Following the end of the war, he was made Constable of Portugal in the Portuguese Cortes of 1668.

In June 1670, Nuno became a member of the Ultramarine Council [pt], an administrative organ of the Portuguese Empire.

In 1707, the Duke was made chief of the Portuguese army.

He first married Maria de Faro, daughter of Francisco de Faro, 7th Count of Odemira.^[1] His second wife was Princess Marie Angélique of Lorraine-Harcourt, daughter of François Louis, Count of Harcourt. His third marriage was to Princess Marguerite of Lorraine-Armagnac (17 November 1662 – 16 December 1730), daughter of Louis, Count of Armagnac. He was grandfather to Leonor Tomásia de Távora, 3rd Marquise of Távora.