TIIS
| Acronym | Definition |
|---|---|
| TIIS | Twin (Time-domain Wavelength Interleaved Network) Iterative Independent Set |
| TIIS | Treasury Inflation-Indexed Securities |
| TIIS | Technology Institution of Industrial Safety (Japan) |
| TIIS | Transactions on Internet and Information Systems (journal; Korean Society for Internet Information) |
| TIIS | Transactions on Interactive Intelligent Systems (Association for Computing Machinery) |
| TIIS | Thermal Imaging Inspection Station |