| Acronym | Definition |
|---|
| TCL | Tool Command Language |
| TCL | Texas Collegiate League (est. 2003) |
| TCL | The Corporate Library |
| TCL | Target Capabilities List |
| TCL | Terminal Coupling Loss |
| TCL | Traction Control |
| TCL | Tae Command Language |
| TCL | Time Cas Latency |
| TCL | Transmission Control Layer |
| TCL | Transform Clipping and Lightning |
| TCL | Tata Communications Ltd. |
| TCL | Transports en Commun Lyonnais (French: Lyon public transport system) |
| TCL | Transports en Commun de Limoges (French: Limoges Public Transport; Limoges, France) |
| TCL | Twentieth Century Literature (classification) |
| TCL | Tung Chung Line (Hong Kong) |
| TCL | Trust Company Ltd. (various locations) |
| TCL | Target Compound List |
| TCL | Tool Control Language |
| TCL | The Colorado Lawyer (Colorado Bar Association) |
| TCL | Trade Centre Limited (Canada) |
| TCL | Tiger Conservation Landscape |
| TCL | Total Current Liabilities |
| TCL | The Community Library (Idaho) |
| TCL | Think Class Library |
| TCL | Terminal Control Language (Verifone) |
| TCL | Technical Career Ladder (Air Liquide) |
| TCL | Transaction Control Language (computing) |
| TCL | Transverse Carpal Ligament |
| TCL | Transport en Commun Lyonnais (Public Transport of Lyon, France) |
| TCL | Total Carnage League (gaming) |
| TCL | Transverse Conversion Loss |
| TCL | Transform, Clipping and Lighting (graphics) |
| TCL | Tuscaloosa, AL, USA - Van De Graff (Airport Code) |
| TCL | Taylor Cullity Lethlean (Australia) |
| TCL | Thrust Control Lever |
| TCL | Target Collimator Long |
| TCL | Twin City Lines (Minneapolis-St Paul) |
| TCL | Tennis Club de Lyon (French: Lyon Tennis Club; France; est. 1864) |
| TCL | Toggle No Clipping (gaming console command) |
| TCL | Taylor Control Language |
| TCL | Tricare for Life (retired military medical insurance) |
| TCL | Today's China Lion |
| TCL | Trap-Charge Limited |
| TCL | Transient Control Level |
| TCL | Training in Christian Living |
| TCL | Total Cost Line |
| TCL | Traffic Controller Light |
| TCL | Testing and Certification Laboratory |
| TCL | Total Cost of Labor |
| TCL | Test Class Level |
| TCL | Teacher Career Ladder Program |
| TCL | TRICARE Line for Care |
| TCL | Théorie des Circuits Linéaires (French) |
| TCL | Thin Cell-Layer Explant (botany) |
| TCL | Thermal Characterization Laboratory (University of California, Santa Cruz) |
| TCL | Terratech Consulting Ltd (Salmon Arm, BC, Canada) |