| JTL | Joint Training Limited (UK) | 联合培训有限公司（英国） |
| JTL | Josephson Tunnel Logic | 约瑟夫森隧道逻辑 |
| JTL | Jump to Lightspeed (video game) | 跳到光速（视频游戏） |
| JTL | Joint Theater Logistics | 联合战区后勤 |
| JTL | Journal of Tort Law | 侵权法杂志 |
| JTL | Joint Task List | 联合任务清单 |
| JTL | Joint Targets List | 联合目标列表 |
| JTL | Journal of Teaching and Learning | 教学与学习杂志 |
| JTL | Just Too Late (see Just In Time) | 太迟了（请参阅准时） |
| JTL | Josephson Transmission Line | 约瑟夫森输电线路 |
| JTL | Joint Target List | 联合目标列表 |