| Acronym | Definition |
|---|
| DTIS | Diagnostic Trade Integration Study (World Trade Organization) |
| DTIS | Department of Telecommunications and Information Services (San Francisco, California) |
| DTIS | Dourlens Technique Industrie Services (French: Dourlens Technical Services Industry) |
| DTIS | Design and Technology of Integrated Systems (in Nanoscale Era; international conference) |
| DTIS | Debtors Tracking Information System (South Africa) |
| DTIS | Don Tilma Information Solutions (Canada) |
| DTIS | Dammit This Is Stupid (comedy troupe) |
| DTIS | Defense Technical Integration Services |
| DTIS | Don't Take It Seriously |