| TSL | Tyovaen Sivistysliitto Tsl (Finnish; Workers' Educational Association) | Tyovaen Tsl Sivistysliitto(芬兰,职工教育协会) |
| TSL | Time Spent Listening | 倾听时间 |
| TSL | Tri-State Logic | 三态逻辑 |
| TSL | Teen Second Life (website) | 青少年第二人生（网站） |
| TSL | Texas State Library | 德克萨斯州图书馆 |
| TSL | Time, Space, Logistics (military planning considerations) | 时间、空间、后勤（军事规划考虑） |
| TSL | The Svedberg Laboratory (Uppsala, Sweden) | 斯维德伯格实验室（瑞典乌普萨拉） |
| TSL | Transport Security Layer | 传输安全层 |
| TSL | Type, Size and Location (preliminary design report for a bridge or highway structure) | 类型、尺寸和位置（桥梁或公路结构的初步设计报告） |
| TSL | Three Stage Lug (tires0 | 三级吊耳（轮胎0 |
| TSL | Transfield Services Limited | Transfield Services有限公司 |
| TSL | Text Substitution Language (knowledge technology) | 文本替换语言（知识技术） |
| TSL | thermally stimulated luminescence | 热激发光 |
| TSL | Torque Sensing Link (Arctic Cat snowmobiles) | 扭矩感应链路（北极猫雪地车） |
| TSL | Transmitter Studio Link | 变送器工作室链接 |
| TSL | Time and Space Ltd | 时空有限公司 |
| TSL | Test and Set Lock | 测试和设置锁定 |
| TSL | Techno Superliner | Techno Superliner公司 |
| TSL | Tri State Laboratories, Inc (Youngstown, OH) | Tri-State Laboratories，Inc（俄亥俄州扬斯敦） |
| TSL | Team Sportsmanship Liaison | 团队体育联络 |
| TSL | Tamuin, Mexico | 墨西哥塔穆因 |
| TSL | Test Script Language | 测试脚本语言 |
| TSL | Terminal System Language | 终端系统语言 |
| TSL | Texas Shortline Railway | 德克萨斯州短线铁路 |
| TSL | Transfinite Systems, Ltd. | Transfinite Systems有限公司。 |
| TSL | Throat Seal Liquid (piston pump technology) | 喉部密封液（活塞泵技术） |
| TSL | Test Script Language (WinRunner) | 测试脚本语言（WinRunner） |
| TSL | The Starting Line (band) | 起跑线（波段） |
| TSL | terminal sensory latency | 末端感觉潜伏期 |
| TSL | Theoretical Splice Line | 理论拼接线 |
| TSL | temperature sensitive liposome | 温敏脂质体 |
| TSL | Three Stage Lugs | 三级吊耳 |
| TSL | Type Something Long | 键入较长的内容 |
| TSL | Triple Super Lead | 三重超级引线 |
| TSL | The Software Link, Incorporated | 软件链接公司 |
| TSL | Turkish Super League (Turkish soccer club level) | 土耳其超级联赛（土耳其足球俱乐部级别） |
| TSL | Triple Stage Lug | 三级吊耳 |
| TSL | The Summit Lighthouse | 山顶灯塔 |
| TSL | The Shifted Librarian | 转变的图书馆员 |
| TSL | Three Stage Lug | 三级吊耳 |
| TSL | The Simpsons Lair | 《辛普森一家》 |