The thirteen specially-commissioned essays in this volume are written by philosophers at the forefront of feminist scholarship, and are designed to provide an accessible and stimulating guide to a philosophical literature that has seen massive expansion in recent years. Ranging from history of philosophy through metaphysics to philosophy of science, they encompass all the core subject areas commonly taught in anglophone undergraduate and graduate philosophy courses, offering both an overview of and a contribution to the relevant debates. Together they testify to the intellectual value of feminism as a radicalizing energy internal to philosophical inquiry. This volume will be essential reading for any student or teacher of philosophy who is curious about the place of feminism in their subject.