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