| Acronym | Definition |
|---|
| CTJ | Character Tabulation with Justification |
| CTJ | Centre Thérapeutique de Jour (French: Therapeutic Day Center; Switzerland) |
| CTJ | Casa Thomas Jefferson (Portuguese: Thomas Jefferson House; Brazil; est. 1963) |
| CTJ | Chaudronnerie, Tolerie, Jennequin (French sheet metal company) |
| CTJ | Come to Jesus |
| CTJ | Centre de Tennis pour Jeunes (French: Youth Tennis Center) |
| CTJ | Commission Technique des Jeunes (French: Youth Technical Committee; Belgium) |
| CTJ | Contrat Territorial pour la Jeunesse (French: Territorial Youth Contract) |
| CTJ | Communicating Threads for Java |
| CTJ | Citizens for Tax Justice/Institute on Taxation and Economic Policy |
| CTJ | Confederation of Thai Journalists (est. 1980) |
| CTJ | Comprehending Technical Japanese (book) |