Ferdinand Bonaventura II von Harrach

Ferdinand Bonaventura Anton von Harrach zu Rohrau und Thannhausen (11 April 1708 – Vienna, 28 January 1778) was an Austrian statesman, diplomat, Knight of the Order of the Golden Fleece and Governor of Milan.

Ferdinand Bonaventura II was the youngest son of Aloys Thomas Raimund, Count Harrach and his second wife Anna Cäcilia von Thannhausen.

He mastered this difficult task and returned to Vienna in 1750, one reason was probably also the death of his eldest brother Friedrich August von Harrach-Rohrau in 1749.

His first marriage, concluded in 1733 with Maria Elizabeth (1718–1738), daughter of Johann Wenzel von Gallas, Viceroy of Naples, remained childless.

In 1740, he married for the second time to Maria Rosa (1721–1785), his own niece, daughter of his brother Friedrich.