| Rank | Abbreviation | Meaning |
|---|
| ***** | TPSL | Thomas Point Shoal Lighthouse
| |
| ***** | TPSL | Tourism Promotion Services Ltd
| |
| ***** | TPSL | Tissue Processing and Storage Laboratory
| |
| **** | TPSL | Telephone Preference Service Limited
| |
| **** | TPSL | Things and People from Sri Lanka
| |
| **** | TPSL | Torbay Private Sector Leasing
| |
| **** | TPSL | Toronto Preschool Speech and Language
| |
| **** | TPSL | Thorne Pneumatic Systems Limited
| |
| *** | TPSL | Tiburon Peninsula Soccer League
| |
| *** | TPSL | Technology Products Solutions Limited
| |
| *** | TPSL | Tritec Power Systems Ltd.
| |
| *** | TPSL | Turbo Power Systems Ltd
| |
| *** | TPSL | Theory Practice Service Learning
| |
| ** | TPSL | Texas Plant and Soil Lab
| |