Adelaide of Holland was a medieval noblewoman born around 1285. She was the daughter of Florence of Holland and John I, Count of Holland. In 1302, she married Rudolf I of Habsburg, strengthening the ties between the Habsburg dynasty and the County of Holland. Adelaide played a significant role in the political landscape of her time. As a member of the Habsburg family, she contributed to the family's influence in Europe. Her marriage helped to solidify alliances, which were crucial during the turbulent political climate of the late 13th and early 14th centuries.