| Abbreviation | Definition |
|---|---|
| JTCA | Japan Transport Cooperation Association |
| JTCA | Joshua Tree Community Association |
| JTEA | Japan–Taiwan Exchange Association |
| JTFA | Japan Tropical Fruit Association |
| JTFA | Jeffrey Town Farmers Association |
| JTTA | Japan Travel and Tourism Association |
| JUA | Japanese Urological Association |
| JUCA | Johannesburg Urban Cyclists Association |
| JUDUA | Joint Uplink and Downlink User Association |
| JUGA | Jack User Group Association |
| JULIA | Japan Underwater Leaders and Instructors Association |
| JUMVEA | Japan Used Motor Vehicle Exporters Association |
| JUTA | Jamaican Union of Travellers Association |
| JUTA | Jammu University Teachers Association |
| JVA | Japan Volleyball Association |
| JVA | Junior Volleyball Association |
| JVMA | Japan Vending Manufacturers Association |
| JVPA | Japan Veterinary Products Association |
| JVPA | Japanese Veterinary Products Association |
| JWA | Junior Women's Association |