This Oxford Handbook celebrates the work of trailblazing women in the history of modern philosophy. Through thirty-one original chapters, it engages with the work of women philosophers spanning the long nineteenth century in the German tradition, and covers women's contribution to major philosophical movements, including romanticism and idealism, socialism, and Marxism, Nietzscheanism, feminism, phenomenology, and neo-Kantianism. It opens with a section on figures, offering essays focused on fifteen thinkers in this tradition, before moving on to sections of essays on movement and topics. Across the volume's chapters, essays examine women's contributions to key philosophical areas such as epistemology and metaphysics, aesthetics, ethics, social and political philosophy, ecology, education, and the philosophy of nature.