| 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 |