This volume features new essays on the application, justification, and role of naturalism in philosophical inquiry. It serves as an important update on current controversies about naturalism. The contributors include leading figures who have written on naturalism and its relevance to a wide range of issues across philosophical subdisciplines. The chapters discuss how naturalism can be properly employed in different philosophical areas such as epistemology, metaphysics, philosophy of mind, philosophy of language, philosophy of religion, philosophy of time, philosophy of science, philosophy of mathematics, philosophy of memory, cognitive science, ethics, meta-ethics, and normativity. Naturalism and Its Challenges will be of interest to scholars and advanced students working in a wide range of philosophical disciplines.