| DA | Double Attitude 
| Others |
| DA | Dragon Age
| Others |
| DA | Drug Abuse
| Others |
| DA | Dry Air
| Others |
| DA | Dual Action
| Others |
| DA | Ducks A
| Others |
| DA | Ductus Arteriosus
| Others |
| DA | Dumbledore's Army
| Others |
| DA | Dumpy Atrocity
| Others |
| DA | Duration of Asset
| Others |
| DA | Durham Academy
| Others |
| DA | The Degrees A
| Others |
| DA | The Deist Alliance
| Others |
| DA | The Dynamic And Active
| Others |
| DA (OC) | Division of Accounting (OC)
| Others |
| DA TOC | Division Artillery Tactical Operations Center
| Others |
| DA&D | Data Acquisition and Distribution
| Others |
| DA&M | Director of Administration and Management
| Others |
| DA&O | DAODisclosure, Apology and Offer
| Others |
| DA&O | Disclosure, Apology and Offer
| Others |
| DA-15 | 15-pin D-SUB (series D subminiature) connector
| Others |
| DA-EPOCH-R | Dose-Adjusted Etoposide, doxorubicin and cyclophosphamide with vincristine, Prednisone and rituximab without Radiotherapy
| Others |
| DA-IICT | Dhirubhai Ambani Institute of Information and Communication Technology
| Education, Academy, College, Institute, Computer Science |
| DA/DH | Decision Altitude/Decision Height
| Others |
| DA2 | Distemper/Adenovirus
| Others |
| DA2 | Doodle Army 2
| Others |
| DA2 | Dragon Age 2
| Others |
| DA5 | Dank Army Five
| Others |
| DA7C | Devon Austin Seven Club
| Others |
| DA7C | Dorset Austin Seven Club
| Others |
| DAA | D Aspartic acid
| Others |
| DAA | Dance of Asian America
| Others |
| DAA | Data Access Actor
| Others |
| DAA | Data Access Agreement
| Others |
| DAA | Data Access Arrangement
| Others |
| DAA | Data Analysis Australia
| Others |
| DAA | Data Availability Acknowledgment
| Others |
| DAA | Davidsonville Athletic Association
| Others |
| DAA | Decimal Adjust Accumulator
| Others |
| DAA | Decimal Adjust After
| Others |
| DAA | Decimal Adjust after Addition
| Others |
| DAA | Decimal Adjust for Addition
| Others |
| DAA | Delaware Apartment Association
| Others |
| DAA | Deliver At Aircraft
| Others |
| DAA | Dementia Action Alliances
| Others |
| DAA | Democratic Alliance for Action
| Others |
| DAA | Departmental Accounts Administrator
| Others |
| DAA | Design and Analysis of Algorithms
| Others |
| DAA | Design Automation Associates
| Others |
| DAA | Designated Accreditation Authority
| Others |