TMSI
| Acronym | Definition |
|---|---|
| TMSI | Temporary Mobile Subscriber Identity |
| TMSI | Temporary Mobile Subscriber Identity (Identifier) |
| TMSI | Tropical Marine Science Institute (Singapore) |
| TMSI | Temporary Mobile Station Identity |
| TMSI | Telephony Managed Solutions, Inc. (Canada) |
| TMSI | The Mortgage Source Inc (Mortgage Centre Canada) |
| TMSI | Tell Me Something Interesting |