| Durham Irish Association of Canada | Academic & Science |
| Diamonds Trust | Business |
| Digital Indoor Advertising | Business |
| Delaware Investment Advisors | Business |
| Dialight | Business |
| Digital Insurance Agenda | Business |
| Detroit Institute of Arts | Community |
| Discipleship In Action | Community |
| Development in Action | Community |
| Document Interchange Architecture | Computing |
| Dedicated Internet Access | Computing |
| Debug Interface Access | Computing |
| Do It Already | Computing |
| Debug Information Access | Computing |
| Distributed Internet Application | Computing |
| Distributed Internet Architecture | Computing |
| Distributed Information Acquisition | Computing |
| DIA | Cryptocurrency |
| Direct Input Amplifier | Electronics |
| Diagraph Graphics (computer Support Corporation) | File Type |
| Dining In America | General |
| Digitized Interactive Applications | General |
| Demys Information Administration | General |
| Data Independent Acquisition | General |
| Democracy in America | General |
| Documento Informativo Abreviado | General |
| Diversity in Action | General |
| Do It All | General |
| Imaging Analysis | General |
| Done In Awhile | General |
| Department of Inspections and Appeals | General |
| Disciples in Action | General |
| Diamanta | General |
| Do It Again | General |
| Department of Inspections Appeals | General |
| Direzione Investigativa Antimafia | General |
| Driving Instructors Association | General |
| Dalton Innovation Accelerator | General |
| Dominion and International Automobiles | General |
| Drug Information Association | Governmental |
| Department of Internal Affairs | Governmental |
| Department of Industrial Accidents | Governmental |
| Design Institute America | Governmental |
| Dallas Innovation Alliance | Governmental |
| DIDWANA | Indian Railway Station |
| Desarrollo Integral Auténtico | International |
| Direct Internet Access | Internet |
| dicated Internet Access | Internet |
| Dynamic Internet Access | Internet |
| Diaphragm | Medical |
| DIAbetic | Medical |
| diakinesis | Medical |
| Diazepam | Medical |
| Diffusely Infiltrating Astrocytoma | Medical |
| Digital Image Analysis | Medical |
| Drug-Induced Agranulocytosis | Medical |
| Disability Integration Act | Medical |
| Defense Intelligence Agency | Military and Defence |
| Dynamic Input Area | Physics Related |
| Denver International Airport | Regional |
