| Acronym | Definition |
|---|
| TJ | Trader Joe's (retail grocery store) |
| TJ | Junction Temperature |
| TJ | Tijuana |
| TJ | Thomas Jefferson |
| TJ | Tajikistan (ISO country code, top level domain) |
| TJ | Triple Jump |
| TJ | Tribunal de Justiça (Justice Court; Brazil) |
| TJ | Tom Jones (Singer) |
| TJ | Trajectory |
| TJ | Thomas James |
| TJ | Toimitusjohtaja (Finnish: Chief Executive Officer) |
| TJ | Tomato Juice |
| TJ | TeraJoule (10^12 Joules) |
| TJ | Therapeutic Jurisprudence (law) |
| TJ | Twitter Jockey (MTV) |
| TJ | Triple J |
| TJ | Team Jonas |
| TJ | Taco John's |
| TJ | Throttle Jockey |
| TJ | Tie Joist |
| TJ | Tongji University (Shanghai, China) |
| TJ | Toonami Jetstream (cartoon network) |
| TJ | Témoin de Jéhovah (French: Jehovah's Witness) |
| TJ | Tommy Jeans (Tommy Hilfiger) |
| TJ | Test Jack |
| TJ | Tablighi Jama'at (Muslim Faith) |
| TJ | Tangerine Juice |
| TJ | Trinidad to Rio de Janeiro (routing designation; US Navy) |
| TJ | Tänään Jäljellä (Finnish: days remaining of military service) |
| TJ | Toile de Jute (French: Burlap) |
| TJ | Turkey Jizz (film character) |
| TJ | Turgescence Jugulaire (French: Distended Jugular) |
| TJ | TACJAM |
| TJ | Telescoping Joint |
| TJ | Tick Juice |
| TJ | Telejector |
| TJ | Tactical Jammer |
| TJ | Tough Jollies |
| TJ | Tamgha-E-Jura'at (The Medal of Gallant awarded to Pakistan Armed Forces) |