| Abbreviation | Definition |
|---|---|
| TMTX | TEMTEX Industries, Inc. |
| TMUL | Temecula Valley Bank, N. A. |
| TMWD | Tumbleweed Communications |
| TMWD | umbleweed Communications |
| TMXIQ | Thermatrix, Inc. |
| TMXU | T M E X - U S A, Inc. |
| TNABY | Tenaga Nasional Berhad |
| TNAV | Tri National Development Corporation |
| TNCX | Network Connection, Inc. |
| TNDE | Tanknology N D E International, Inc. |
| TNET | TelnetGo2000, Inc. |
| TNEX | Tunex International, Inc. |
| TNFI | The North Face, Inc. |
| TNGI | Tenney Engineering, Inc. |
| TNKC | Go Think.Com, Inc. |
| TNOW | TravelNOW.Com, Inc. |
| TNPD | Tone Products, Inc. |
| TNRG | Tianrong Building Material Holdings |
| TNRK | T N R Technical, Inc. |
| TNRK | TNR Technical, Incorporated (de-listed) |