| Term | Full Form | Category |
|---|---|---|
| DDSI | Device Driver Software Interface | Others |
| DDSI | Digestive Disease Specialists Inc | Others |
| DDSI | Digestive Disease Surgery Institute | Others |
| DDSI | Digital Data Submission Information | Others |
| DDSI | Digital Descriptor Systems Inc | Others |
| DDSI | Directorate of Defense Services Intelligence | Others |
| DDSI | Diversified Data Systems Inc | Others |
| DDSI | Downtown Design Services Inc | Others |
| DDSI | Dual Diagnosis Screening Instrument | Others |
| DDSI | Dual Diagnosis Screening Interview | Others |