Margaret II of Flanders was a notable medieval noblewoman born around 1170. She was the daughter of Baldwin V, Count of Flanders and Margaret I of Flanders. Margaret became the Countess of Flanders through her marriage to Baldwin IX, Count of Flanders, which helped strengthen the ties between the regions of Flanders and Hainaut. Margaret played a significant role in the politics of her time, particularly during the Crusades. After her husband's death in 1205, she took on a more active role in governance. Her leadership contributed to the stability of Flanders, making her an important figure in the region's history.