Philosophy

Here is the same list of societies/associations grouped together by focus/topic:

General (and/or difficult to classify)

• American Philosophical Association
  
• American Philosophical Practitioner's Association
• British Philosophical Association
• Canadian Philosophical Association = Association Canadienne de Philosophie
• Council for Secular Humanism
• Deutsche Gesellschaft für Philosophie
• Fédération Internationale des Sociétés de Philosophie = International Federation of Philosophical Societes [in English]
• International Association for Computing and Philosophy
  
• International Association for Environmental Philosophy (IAEP)
• International Association for Philosophy and Literaure
• International Association for Scottish Philosophy 
• Irish Philosophical Society
• North Texas Philosophical Association
  
• Philosophical Society of England
• Philosophy Documentation Center
• Royal Institute of Philosophy
• Scholary Societies in Philosophy
• Società Filosofica Italiana
  
• Société de Philosophie du Québec
• Society for Applied Philosophy
• Society for Exact Philosophy
• Society for Philosophical Inquiry (SPI)
• Society for Philosophy and Technology
• Society for Philosophy in the Contemporary World
• Society for the Advancement of American Philosophy
• Society for the Study of Africana Philosophy
• Society of Philosophers in America

Individual Philosophers

• Aristotelian Society (British)
• Austrian Ludwig Wittgenstein Society
• Ayn Rand Society
• Bertrand Russell Society
• British Wittgenstein Society
• Charles S. Peirce Society
• Friedrich Nietzsche Society
  
• Gabriel Marcel Society
• Hegel Society of America
• Heidegger Circle
• Hume Society
• Husserl Circle
• International Adam Smith Society
• International Berkeley Society [Bishop George Berkeley]
• International Ludwig Wittgenstein Society
• International Plato Society
• Internationale Hegel-Gesellschaft
• Josiah Royce Society
  
• Kurt Godel Society
• Leibniz Society of America
• Merleau-Ponty Circle
• North American Fichte Society
  
• North American Kant Society
• North American Nietzsche Society
  
• North American Sartre Society
• Ralph Waldo Emerson Society
• Reid Society
  
• Rousseau Association
  
• Santayana Society
• Society for Ricoeur Studies
• The Søren Kierkegaard Society
• Thomas Instituut (Aquinas)
• Thoreau Society
• William James Society

Societies/Associations for special groups

• American Association of Philosophy Teachers
• American Catholic Philosophical Association
  
• American Indian Philosophical Association
• Association of Chinese Philosophers in North America
• Evangelical Philosophical Society
• International Association of Women Philosophers = Internationale Assoziation von Philosophinnen [in English and German]
• Scots Philosophical Club
• Scottish Postgraduate Philosophy Association
• Society for Women in Philosophy
• Society of Christian Philosophers
• Society of Humanist Philosophers
• Welsh Philosophical Society

Aesthetics

• American Society for Aesthetics - Aesthetics Online
• British Society of Aesthetics
• Society for the Philosophic Study of the Contemporary Visual Arts

Analytic Philosophy

• European Society of Analytic Philosophy (ESAP)
• Gesellschaft für Analytische Philosophie
  
• The History of Early Analytic Philosophy Society

Philosophy of Education

• Canadian Philosophy of Education Society
• International Network of Philosophers of Education
• Philosophy of Education Society

Epistemology

• Canadian Society for Epistemology

Ethics/Bioethics

• American Society of Bioethics and Humanities
• Association for Feminist Ethics and Social Theory (FEAST)
• Association for Practical and Professional Ethics
• Association for Professional and Practical Ethics
• British Society for Ethical Theory
• Canadian Bioethics Society = Société canadienne de bioéthique [in English and French]
• Canadian Society for the Study of Practical Ethics
• International Association of Bioethics
• International Society for Environmental Ethics
• Markkula Center for Applied Ethics
• National Catholic Bioethics Center
• Sociedad Internacional de Bioética= International Society of Bioethics = Société Internationale de la Bioéthique [in English & other European languages]
• Society for Ethics

History of Philosophy/Philosophy of History

• Ancient Philosophy Society
• Australasian Society for Continental Philosophy
• British Society for the History of Philosophy
• Canadian Society for Continental Philosophy
• Centre for Research in Modern European Philosophy (Kingston University, London)
• Forum for European Philosophy (British)
• International Association for Greek Philosophy
• International Society for Neoplatonic Studies
  
• Society for Ancient Greek Philosophy
• Society for German Idealism
• Society for Medieval and Renaissance Philosophy
  

Logic/Philosophy of Science/Philosophy of Mathematics

• Association for Informal Logic and Critical Thinking (AILACT)
• Association for Logic, Language and Information
• Association for Symbolic Logic
• Belgian Society for Logic and Philosophy of Science
• British Logic Colloquium
• British Society for the Philosophy of Science
• Canadian Society for the History and Philosophy of Mathematics
• European Association for Logic, Language and Information [= European Foundation for Logic, Language and Information]
  
• HOPOS - The International Society for the History of Philosophy of Science
• Philosophy of Science Association

Metaphysics

• Metaphysical Society of America

Philosophy of Mind/Consciousness/Psychology

• American Society For Philosophy, Counseling & Psychotherapy
• Association for the Scientific Study of Consciousness
• Center for Subjectivity Research (Danish National Research Foundation)
• Cognitive Science Society
• Mind Association (British)
• Society for Philosophy and Psychology
• Southern Society for Philosophy and Psychology

Phenomenology

• British Society for Phenomenology
• Center for Advanced Research in Phenomenology
• Deutsche Gesellschaft für phänomenologische Forschung
• Nordic Society for Phenomenology
• Organization of Phenomenological Organizations
• Romanian Society for Phenomenology
• Society for Interdisciplinary Feminist Phenomenology
• Society for Phenomenology and Existential Philosophy
• World Phenomenology Institute

Social Philosophy/Political Philosophy/Philosophy of Law 

• American Society for Political and Legal Philosophy
• Association for Liberty, Philosophy, and Society
• Association for Political Theory
• North American Society for Social Philosophy
• Radical Philosophy Association
• Society for Social and Political Philosophy
• Society for the Philosophical Study of Marxism

Philosophy of Religion

• British Society for the Philosophy of Religion

Special thanks to Patrick Doyle of the Marquette University Libraries for permission to copy this page from his library guide.