| Rank | Abbreviation | Meaning |
|---|
| ***** | TDIS | Travel Document Issuance System
| |
| *** | TDIS | Thoroughbred Direct Intermodal Services, Inc
| |
| *** | TDIS | Tactical Digital Intercom System
| |
| *** | TDIS | Training Delivery for the Informal Sector
| |
| ** | TDIS | Training Development Information System
| |
| ** | TDIS | Tem Disk Identification System
| |
| ** | TDIS | Test Data Information System
| |
| ** | TDIS | Toronto Dominion Investment Services, Inc.
| |
| ** | TDIS | Telephone Distributors Inc.
| |
| * | TDIS | Total Dissolved Inorganic Solids
| |
| * | TDIS | Test Documentation Information System
| |
| * | TDIS | Timely Discharge Information System
| |
| * | TDIS | Training and Development Information Service
| |
| * | TDIS | telomerase DNA interacting surface
| |
| * | TDIS | Time Distance
| |
| * | TDIS | Telecom Directory Information System
| |
| * | TDIS | Trickle Drip Irrigation Systems
| |
| * | TDIS | Tn Dunamis Internet Services
| |