| Main Entry | R | I | S | M | B | C | N |
| D'Alemhert, Jean Le Rond | X | X | |||||
| Daly, Mary | X | ||||||
| Damascius | X | ||||||
| Damasio, Antonio | X | ||||||
| Damian, Peter | X | ||||||
| Damon | X | ||||||
| Dance | X | ||||||
| Dandaniti | X | ||||||
| Dandyism | X | ||||||
| Dante Alighieri | X | ||||||
| Darii | X | ||||||
| Darsana | X | ||||||
| Darwin, Charles | X | X | |||||
| Darwinism | X | ||||||
| Dasein | X | X | |||||
| Datisi | X | ||||||
| Datum | X | ||||||
| Daud, Abraham Ibn | X | ||||||
| David | X | ||||||
| Davidson, Donald | X | X | X | ||||
| Day, Dorothy | X | ||||||
| de dicto / de re | X | ||||||
| de facto / de jure | X | ||||||
| De Interpretatione | X | ||||||
| De Morgan, Augustus | X | ||||||
| De Morgan's laws | X | ||||||
| de re | X | ||||||
| De Sanctis, Francesco | X | ||||||
| Deanthropomorphism | X | ||||||
| death | X | ||||||
| death penalty | X | ||||||
| Decadence | X | ||||||
| Decision | X | ||||||
| Decision problem | X | ||||||
| decision procedure | X | ||||||
| deconstruction | X | ||||||
| deconstructionism | X | ||||||
| Decurtate syllogism | X | ||||||
| Dedekind, (Julius Wilhelm) Richard | X | ||||||
| Dedekind, Richard | X | ||||||
| Dedekind's postulate | X | ||||||
| Deduction | X | X | X | X | |||
| Deduction of the Categories | X | ||||||
| Deduction theorem | X | ||||||
| definite descriptions | X | ||||||
| Definition | X | X | |||||
| Definition of a term | X | ||||||
| deism | |||||||
| Deism | X | X | X | X | |||
| deism, English | X | ||||||
| deism, French | X | ||||||
| Deleuze, Gilles | X | ||||||
| Delusion | X | ||||||
| Demiurge | X | ||||||
| democracy | |||||||
| Democritus of Abdera | X | X | X | X | |||
| Demonax | X | ||||||
| Demonology | X | ||||||
| Demonstration | X | ||||||
| DeMorgan, Augustus | X | ||||||
| DeMorgan's Th. (DeM.) | X | ||||||
| Denial of the antecedent | X | ||||||
| Dennett, Daniel | X | X | |||||
| Denomination | X | ||||||
| Denotation | X | X | |||||
| Dense order | X | ||||||
| denying the antecedent | X | ||||||
| Deontological ethics | X | ||||||
| deontologism | X | ||||||
| deontology | X | ||||||
| dependence, ontological | X | ||||||
| Depersonalization | X | ||||||
| Deproblematization | X | ||||||
| Derrida, Jacques | X | ||||||
| Descartes, René | X | X | X | X | |||
| Descartes, René, epistemology | X | ||||||
| Descartes, René, ethics | X | ||||||
| Descartes, René, life and works | X | ||||||
| Descartes, René, modal metaphysics | X | ||||||
| Descartes, René, ontological argument | X | ||||||
| Descartes, René, and the pineal gland | X | ||||||
| Description, Knowledge by | X | ||||||
| Descriptions | X | X | |||||
| descriptive ethics | X | ||||||
| descriptivism | X | ||||||
| desert | X | ||||||
| Desgabets, Robert | X | ||||||
| design, argument from | X | X | |||||
| Designate | X | ||||||
| Designated values | X | ||||||
| Designatum | X | ||||||
| desire, second-order | X | ||||||
| Destiny | X | ||||||
| determinable/determinate | X | X | |||||
| Determination | X | ||||||
| Determinism | X | X | X | X | |||
| Determinism, causal | X | ||||||
| Deus ex machina | X | ||||||
| Deustua, Alejandro | X | ||||||
| devil | X | ||||||
| Dewey, John | X | X | X | ||||
| Dewey, John, moral philosophy | X | ||||||
| Dewey, John, political philosophy | X | ||||||
| Dharma | X | ||||||
| d'Holbach, Baron | X | ||||||
| Dhyana | X | ||||||
| Diagram | X | X | |||||
| dialectic | |||||||
| Dialectic | X | X | X | ||||
| Dialectical materialism | X | X | X | ||||
| Dialectical School | X | ||||||
| dialetheism | X | X | |||||
| Diallelon | X | ||||||
| Diallelus | X | ||||||
| Dialogic method | X | ||||||
| Dialogism | X | ||||||
| Dianoetic Virtues | X | ||||||
| Diánoia (dianoia) | X | X | |||||
| Diaspora | X | ||||||
| Dichotomy | X | ||||||
| Dictum de omni et nullo | X | ||||||
| Didactics | X | ||||||
| Diderot, Denis | X | X | X | ||||
| Dietrich of Freiburg | X | ||||||
| Difference | X | ||||||
| Difference, Method of | X | ||||||
| díkê (dikh) | X | ||||||
| Dilemma | X | X | |||||
| Dilettantism | X | ||||||
| Dilthey, Wilhelm | X | X | |||||
| Dimaris | X | ||||||
| Dimension | X | ||||||
| Dimensions of Consciousness | X | ||||||
| Ding an sich | X | X | |||||
| Diogenes Laertius | X | X | |||||
| Diogenes of Apollonia | X | ||||||
| Diogenes of Sinope | X | X | |||||
| Dionysian | X | ||||||
| Dionysius the the Pseudo-Areopagite | X | ||||||
| Diorism | X | ||||||
| Direct knowledge | X | ||||||
| direct realism | X | ||||||
| Direct theories of knowing | X | ||||||
| directive use of language | X | ||||||
| Disamis | X | ||||||
| Discourse | X | ||||||
| Discovery | X | ||||||
| Discrepancy | X | ||||||
| Discrete | X | ||||||
| Discretion | X | ||||||
| Discrimination | X | ||||||
| Discursive Cognition | X | ||||||
| Disjunction | X | X | X | ||||
| Disjunctive | X | ||||||
| Disjunctive syllogism | X | X | |||||
| Disparate | X | ||||||
| Disparity | X | ||||||
| Disputatio | X | ||||||
| Disputation | X | ||||||
| Dissimilarity | X | ||||||
| Dissociation | X | ||||||
| Dissociation of Personality | X | ||||||
| Distinction | X | ||||||
| Distinctness | X | ||||||
| distributed representation | X | ||||||
| Distribution (Dist.) | X | ||||||
| Distribution (of terms) | X | X | |||||
| Distributive Justice | X | ||||||
| Distributive law | X | ||||||
| Disvalue | X | ||||||
| Divine | |||||||
| Divine attributes | X | ||||||
| Divine command theory | |||||||
| Divine illumination | X | ||||||
| Divine nature | X | ||||||
| Divisibility | X | ||||||
| Division | X | ||||||
| division, fallacy of | X | ||||||
| Divisionism | X | ||||||
| Docta ignorantia | X | ||||||
| Doctrinaires | X | ||||||
| Dogma | X | X | |||||
| dogmatism | |||||||
| Dogmatism | X | X | |||||
| doing vs. allowing harm | X | ||||||
| Donatists | X | ||||||
| Donum superadditum | X | ||||||
| double aspect theory | X | ||||||
| double effect, doctrine of | X | ||||||
| Double Negation | X | ||||||
| Double negation, law of | X | ||||||
| Double-Aspect Theory | X | ||||||
| Doubt | X | X | |||||
| doubt, method of | X | ||||||
| Dóxa (doxa) | X | X | |||||
| doxastic | X | ||||||
| doxography of ancient philosophy | X | ||||||
| Drama | X | ||||||
| Dravya | X | ||||||
| Drawing | X | ||||||
| Dreyfus, Hubert | X | ||||||
| Driesch, Hans Adolf Eduard | X | ||||||
| dual-aspect theory | X | ||||||
| Dualism | X | X | X | X | X | X | |
| dualism, Cartesian interactionist | X | ||||||
| dualism, mind-body | X | ||||||
| dualism, property | X | ||||||
| dualism, substance | X | ||||||
| Duality | X | ||||||
| Dubois, W.E.B. | X | ||||||
| Ductio per contradictoriam propositionem sive per impossible | X | ||||||
| Duhem, Pierre | X | ||||||
| Dühring, Eugen Karl | X | ||||||
| Dummett, Michael | X | ||||||
| Duns Scotus, John | X | X | X | ||||
| Duration | X | ||||||
| Durkheim, Emile | X | X | |||||
| duties | X | ||||||
| duty | X | X | |||||
| Duty | X | ||||||
| Dyad | X | ||||||
| Dyadic | X | ||||||
| Dyadic Relation | X | ||||||
| Dynamic Vitalism | X | ||||||
| dynamical systems theory | X | ||||||
| Dynamis | |||||||
| Dynamis (dunamiV) | X | X | |||||
| dynamism | |||||||
| Dynamism | X | X | |||||
| Dyophysites | X | ||||||
| Dysteleology | X |