| Abbreviation | Definition |
|---|---|
| Tava | Octavia |
| Tavi | Octavia |
| TBS | The Ben Seck |
| TBSK | Trusty Boy Scout Knife |
| TC | Teresa Claire |
| TC | Terry Christian |
| TC | Thelma Catherine |
| TC | Thomas Charles |
| TC | Tigger Cat |
| TC | Tobias Christopher |
| TC | Trisha Catherine |
| TC | Tubby Cat |
| TC | Tuff Cat |
| TC | Tyler Craig |
| TCS | Texas Counterspy |
| TD | Teriffic Dolphin |
| TERRY | Theresa |
| TG | Toe Gunk |
| TGI | Thaddeus Gustav Ignacius |
| TH | Thomas Helmut |