| Abbreviation | Definition |
|---|---|
| CL | Cabin Lighting |
| CL | Cargo Lifter |
| CL | Center Line |
| CL | Certified Location |
| CL | Container Load |
| CLAP | Chrome Leather Accessories And Paint |
| CLC | Course Line Computer |
| CLE | Cleveland - Hopkins International Airport |
| CLE | Cleveland Amtrak Station |
| CLI | Clover Leaf Interchange |
| CLK | Coupe Light and Kurz |
| CLM | Certified Limosine Manufacturer |
| CLOG | Congestion Location Output Graphics |
| CLP | Clean, Lube, Protect |
| CLRV | Canadian Light Rail Vehicle |
| CLT | Calculated Landing Time |
| CLT | Charlotte / Douglas International Airport |
| CLT | Charlotte Amtrak Station |
| CLTD | Certification in Logistics Transportation and Distribution |
| CLTP | Center for Logistics Transportation Policy |