Countess Anna of Nassau-Dillenburg was a noblewoman born in 1573, part of the House of Nassau. She was the daughter of Count John VI of Nassau-Dillenburg and Countess Elisabeth of Leuchtenberg. Anna played a significant role in the political landscape of her time, particularly through her marriage alliances. In 1595, Anna married Count John VII of Nassau-Siegen, strengthening ties between their families. The couple had several children, contributing to the lineage of the House of Nassau. Anna's life reflects the importance of marriage in consolidating power and influence among European nobility during the late 16th and early 17th centuries.