| Acronym | Definition |
|---|
| APTL➣Asset Protection Team Leader (various companies) |
| APTL➣Administrative Payment Team Leader (US Coast Guard) |
| APTL➣Association of Part Time Librarians (online communication and support group; est. 1988) |
| APTL➣Assembly of Professionals and Technicians in Lebanon |
| APTL➣Accredited POSIX Testing Laboratory |
| APTL➣Asynchronous Propositional Temporal Logic (computer science) |
| APTL➣Automotive Production Technologies Ltd. (UK) |