Johanna Theresia Lamberg

Countess Johanna Theresia von Lamberg (1639–1716), was an Austrian noblewoman and a Spanish court official.

Born into an old Austrian House of Lamberg, she was the second child and the eldest daughter of a diplomat and courtier, Count Johann Maximilian Nepomuk von Lamberg-Steyr and his wife, Countess Judith Rebecca Eleonore von Würben und Freudenthal (1612-1690).

She was married to Ferdinand Bonaventura I, Count von Harrach (1637-1706), an Imperial ambassador to Spain in 1673–76, and played an important role as a mediator and channel for the sale of offices as well as in the diplomatic service, particularly concerning the proposed marriage between Charles II of Spain and Archduchess Maria Antonia of Austria.

On 25 July 1635, she married Count Ferdinand Bonaventura I von Harrach zu Rohrau, member of an equally old House of Harrach, confidant of Emperor Leopold I.

Among them were Franz Anton, Fürst von Harrach and his younger brothers Johann Philipp von Harrach and Aloys Thomas Raimund, Count von Harrach.