Frederica Louisa of Hesse-Darmstadt (1751-1805) was a German princess born into the House of Hesse. She was the daughter of Louis IX, Landgrave of Hesse-Darmstadt and Caroline of Hesse-Rheinfels. In 1769, she married Prince Charles of Hesse-Kassel, strengthening the ties between their noble families. Frederica Louisa became known for her charitable work and support of the arts. She played a significant role in the cultural life of her time, promoting education and welfare initiatives. Her legacy includes contributions to the development of social services in her region, reflecting her commitment to public welfare.