There has been an explosion of work on consciousness in the last 30-40 years from philosophers, psychologists, and neurologists. Thus, there is a need for an interdisciplinary, comprehensive volume in the field that brings together contributions from a wide range of experts on fundamental and cutting-edge topics. The Routledge Handbook of Consciousness fills this need and makes each chapter's importance understandable to students and researchers from a variety of backgrounds. Designed to complement and better explain primary sources, this volume is a valuable "first-stop" publication for undergraduate or graduate students enrolled in any course on "Consciousness," "Philosophy of Mind," or "Philosophy of Psychology," as well as a valuable handbook for researchers in these fields who want a useful reference to have close at hand. The 34 chapters, all published here for the first time, are divided into three parts: Part I covers the "History and Background Metaphysics" of consciousness, such as dualism, materialism, free will, and personal identity, and includes a chapter on Indian philosophy. Part II is on specific "Contemporary Theories of Consciousness," with chapters on representational, information integration, global workspace, attention-based, and quantum theories. Part III is entitled "Major Topics in Consciousness Research," with chapters on psychopathologies, dreaming, meditation, time, action, emotion, multisensory experience, animal and robot consciousness, and the unity of consciousness. Each chapter begins with a brief introduction and concludes with a list of "Related Topics," as well as a list of "References," making the volume indispensable for the newcomer and experienced researcher alike.