| Acronym | Definition |
|---|
| DCN | Data Center Networking |
| DCN | DLA (Defense Logistics Agency) Corporate Network |
| DCN | Disconnect |
| DCN | Direction des Constructions Navales (France) |
| DCN | Data Communication Network |
| DCN | Deep Cerebellar Nuclei (brain) |
| DCN | Demand Chain Networks |
| DCN | Data Communications Networks |
| DCN | Data Connection Network |
| DCN | Document Control Number |
| DCN | Dynamic Circuit Network (computer networking) |
| DCN | Declaration Control Number |
| DCN | Document Change Notice |
| DCN | Dorsal Cochlear Nucleus (neurology) |
| DCN | Designing Cisco Networks |
| DCN | Design Change Notice |
| DCN | Development Communication Network (est. 2002; Bangladesh) |
| DCN | Deputy Commander for Nursing |
| DCN | Delivery Confirmation Number (various organizations) |
| DCN | Distributed Computer Network |
| DCN | Duct Cleaners' Network (Bowie, MD) |
| DCN | Digital Communications Network |
| DCN | Data Link Coordination Net (US DoD) |
| DCN | Deputy Charge Nurse (UK) |
| DCN | Data Consortium Namespace |
| DCN | Drawing Change Notice |
| DCN | Data-Link Coordination Net |
| DCN | Designated Change Number (accounting) |
| DCN | DAF (Van Doorne's Automobiel Fabriek) Club Nederland (Dutch car club) |
| DCN | Dancube Network (website) |
| DCN | Defense Communications Network |
| DCN | Delivery Center Network |
| DCN | Disaster Contractor Network |
| DCN | Data Control Network |
| DCN | Diabetes Control Network |
| DCN | Dimensional Controller Nodes (Xiotech) |
| DCN | Dance Camp North (UK) |
| DCN | DriveClone Network |
| DCN | Double Check Negotiation (Social Security) |
| DCN | Data Change Notice |
| DCN | Doctor of Clinical Nutrition (degree program) |
| DCN | Duplication Cost New (financial valuation) |
| DCN | District Communication Network (Afghanistan) |
| DCN | DeepCyberNet (internet hosting provider) |
| DCN | Direct Connect Newsletter (Intel) |
| DCN | Digital China Networks, Ltd. (China) |
| DCN | Division du Combustible Nucléaire (French: Division of Nuclear Fuel; nuclear energy industry) |
| DCN | Desert Communications Network (California Amateur Radio Group) |
| DCN | Dilmah Cricket Network (Sri Lanka) |
| DCN | Develop Community Network (Mexico) |
| DCN | Developmental Cognitive Neuropsychology |
| DCN | Design Communicate Network (Germany) |
| DCN | Data Consult Nord (Danish: Data Consult North) |