| Acronym | Definition |
|---|
| DoS | Department Of State (United States) |
| DoS | Disk Operating System |
| DoS | Date of Service (health insurance) |
| DoS | Denial Of Service (attack) |
| DoS | Department of Space (India) |
| DoS | Department of Statistics |
| DoS | Day of Show |
| DoS | Density of States |
| DoS | Director of Security |
| DoS | Distribution of States |
| DoS | Director of Sales |
| DoS | División de Organizaciones Sociales (Spanish: Division of Social Organizations; Chile) |
| DoS | Department of Surgery |
| DoS | Division of Safety (various locations) |
| DoS | Department of Shipping (various locations) |
| DoS | Dean of Students |
| DoS | Days of Supply (US DoD) |
| DoS | Date Of Separation |
| DoS | Director of Operations and Support |
| DoS | Dosimeter |
| DoS | Daughter of Satan |
| DoS | Director of Emergency Services |
| DoS | Disciplines of Study (UK) |
| DoS | Degree of Saturation |
| DoS | Department of Sanitation (New York City) |
| DoS | Distributed Operating System |
| DoS | Degree of Scattering |
| DoS | Degree of Superiority (algorithm comparison) |
| DoS | Division of Standards (Massachusetts) |
| DoS | Directorate of Safety (various organizations) |
| DoS | Deposition On Silicon |
| DoS | Dead on Scene |
| DoS | Declaration of Security |
| DoS | Democratic Opposition of Serbia |
| DoS | Directly Operated Stores |
| DoS | Data Overrun Status |
| DoS | Development Open Server |
| DoS | Dedicated Office System |
| DoS | Data Output Stream |
| DoS | Denial of Service |
| DoS | Digital Operating System |
| DoS | District Open Space (Hong Kong) |
| DoS | Demokratska Opozicija Srbije (Democratic Opposition of Serbia; Coalition of Democratic Political Serbian Parties) |
| DoS | District of Sechelt (Canada) |
| DoS | Director of Ordnance Services (Australia) |
| DoS | Distributed Object Server (Objectstream - SS7) |
| DoS | Dozing Off Soon |
| DoS | Dependents Overseas |
| DoS | Direct Operating System |
| DoS | Dreaded Orange Spots (soapmaking, indicates soap has gone rancid) |
| DoS | Direction des Opérations de Secours |
| DoS | Dad Over Shoulder |
| DoS | Director Of Operations & Support |
| DoS | Directionally Oriented Structures |
| DoS | Date of Sobriety (recovery programs) |
| DoS | Denver Orchid Society |
| DoS | Date of Seeding |
| DoS | Deutscher Orgon Service |
| DoS | Daemons of Shadow (gaming) |
| DoS | Deployed Operational State |
| DoS | Dropout Studios |
| DoS | Distributed Open-Short (microwave theory) |
| DoS | Division of Operational Safety (US Atomic Energy Commission) |
| DoS | Denied Originating Service |
| DoS | Dementia Observation System (psychology) |
| DoS | Diis Omnibus Sacrum (Latin: Sacred to All the Gods, epigraphy) |
| DoS | Declaration of Safety |
| DoS | Designated Operator Service (SBC) |
| DoS | Data Overhead Switch (Nortel) |
| DoS | District Office Study |
| DoS | Densité d'Occupation des Sols (French: Density Land Use; France and Canada) |
| DoS | Detachable Output Stream |
| DoS | Director of Study/Studies |
| DoS | Duncan's Outdoor Shop (Bay City, Michigan) |