Countess Margarethe von Hanau-Lichtenberg, known upon her marriage as Margarethe, Countess of Nassau-Wiesbaden-Idstein (15 May 1463 â 26 May 1504) was a German noblewoman who, as the wife of Adolf III of Nassau-Wiesbaden-Idstein, was the Countess of Nassau-Wiesbaden and Nassau-Idstein.
Margarethe was the daughter of Philipp I, Count of Hanau-Lichtenberg and Anna von Lichtenberg. Her father ruled over the county of Hanau-Lichtenberg and, after the death of her maternal grandfather, the Lordship of Lichtenberg. She was a younger sister of Philipp II, Count of Hanau-Lichtenberg.
On 20 June 1484 she married Adolf III, Count of Nassau-Wiesbaden. They had four children:
In 1509 her husband succeeded his childless brother, Philip, Count of Nassau-Idstein, as the Count of Nassau-Idenstein, therefore making Margarethe a countess of Idenstein.
She died on 26 May 1504.