Ruth Hagengruber is a German philosopher, currently professor and head of philosophy at the University of Paderborn. She specialises in the history of women philosophers as well as philosophy of economics and computer science and is a specialist on Émilie Du Châtelet. Hagengruber is the director of the Center for the History of Women Philosophers and Scientists and founder of the research area EcoTechGender. She invented the Libori Summer School and is the creator of the Encyclopedia of Concise Concepts by Women Philosophers, for which she holds the position of editor in chief together with Mary Ellen Waithe.