| Rank | Abbreviation | Meaning |
|---|
| ***** | SPDL | Second Ponce de Leon
| |
| ***** | SPDL | Sacramento Professional Development League
| |
| ***** | SPDL | Structured Program Design Language
| |
| ***** | SPDL | Specification and Description Language
| |
| **** | SPDL | Security Policy Definition Language
| |
| *** | SPDL | Southeastern Pennsylvania Debate League
| |
| *** | SPDL | Siemens Protection Devices Ltd
| |
| *** | SPDL | Security Policy Description Language
| |
| ** | SPDL | Standard Page Description Language
| |
| ** | SPDL | Stanford Plasma Dynamics Laboratory
| |
| ** | SPDL | Softimage Plug in Definition Language
| |
| ** | SPDL | Serv Personal Date Line
| |
| * | SPDL | Smart Product Design Laboratory
| |
| * | SPDL | Scholars Program in Dental Leadership
| |
| * | SPDL | Spindle
| |
| * | SPDL | Suppressive Person Defense League
| |
| * | SPDL | Scottish Parasite Diagnostic Laboratory
| |
| * | SPDL | Standardized Page Description Language
| |
| * | SPDL | Smart Product Design Lab
| |
| * | SPDL | South Pacific Division Laboratory
| |
| * | SPDL | Secure Portable Door Lock
| |
| * | SPDL | Standardized Page Discriptor Language
| |
| * | SPDL | South Port Day Links
| |
| * | SPDL | Standard Page Definition Language
| |
| * | SPDL | Sabbatical and Professional Development Leave
| |