DH Model
DID-state
DIOism
Dab Occultism
Danteism- File:Fluffy BlackNat.png Dark Chocolate
Dark Soulsism- File:Darkieee.png Darkieism
Darkness Divinialism
Daveism 
Dawkinsism- Dawnism
De La Vandalism- File:KikaSoc.png Deaf Socialism
- Debaterism
- Decelerationist Nullism
- Decepticonism
Degrowth- File:DeistTheocracy-icon.png Deist Theocracy
- File:Deistocracy.png Deistocracy
- Delinquentism
- Deliverism
Delsopism- Delusionalism
- File:Demflop.png DemFloppaism
Demarcho-Socialism- File:Dement.png Dementiarchy
- Democracycracy
- Democratic Anarchism
Democratic Corporatism
Democratic Falangism
Democratic Gerontocracy
Demonism- File:Demoncr.png Demonocracy
Demosism- Denatian Ideologies
- File:Denflop.png DenatoFloppaism
Densoc- Derealization
- Desert-Busism
Destinyism
DeviantArtism
Devolved Egoism- File:Diabetes.png Diabeteism
- File:Communistdiabetic.png Diabeteism-Communism
- Dietrichism
Diplomatic Capitalism
Direct Constitutionalism- Disco Communism
Discord Moderationism
Discriminationism- File:Dister.png Disterism
Distributist Libertarian Anarchism
Divinialism
Divinialist Darwinism- File:DEQS.png Divinialist Extraphysicist Quantumist Soulism
Divinialist Ingsoc- Divinialist Nullism
Divinialist Post-Humanism- Divinity Original Sinism
- File:Divinocracy-icon.png Divinocracy
- File:Dm.png Dmitryism
- Doectism
- File:Dogecoin confederalism.png Dogecoin Confederalism
Dogecoin Economy- Donism
- File:AuthNil.png Dontcareism
- Doorlichting
- Doreism
Downfall Hitlerism- Downwards Spiralism
Dozenalism- Dozenalsoc
- File:DragZ.png Dragon Ballism
DreamSMPism
Drekism- Drivism
Droogism
Drug Worship- Druidism
Dubčekism- File:Duluth Model Icon.png Duluth Model
- Dunblane Anarchism
Duoeconomism
Duolingoism- Duplessism
Dutch Quasi-Centrism
Duty
Dylanism 
Dystopianism
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