| Acronym | Definition |
|---|
| SLL | SuperLuigiLogan (series) |
| SLL | SWIFT (Society for Worldwide Interbank Financial Telecommunication) Local Link |
| SLL | Sierra Leone Leone (national currency) |
| SLL | State Library of Louisiana (Baton Rouge, LA) |
| SLL | Sandoval Lake Lodge (Peru) |
| SLL | Small Lymphocytic Lymphoma |
| SLL | Seamless Link |
| SLL | Sick, Lame and Lazy (military slang) |
| SLL | Shift Left Logical |
| SLL | Saving Londoners' Lives (London, UK) |
| SLL | Singly Linked List (computer programming) |
| SLL | Suomen Lukiolaisten Liitto Ry (Finnish: Union of Finnish Upper Secondary School Students) |
| SLL | Stop Look Listen |
| SLL | Side-Lobe Level |
| SLL | Standard Linear and Logic |
| SLL | Single-Loop Learning (learning within a paradigmatic context) |
| SLL | Sociedad Laboral Limitada |
| SLL | Service Language Layer (programming) |
| SLL | Stanford Learning Laboratory (Stanford University; Stanford, CA) |
| SLL | Sandia Laboratories Livermore |
| SLL | Statically Linked Library |
| SLL | Structured Lease Line |
| SLL | Sims: Livin' Large (game) |
| SLL | Secondary Lobe Level |
| SLL | Specified Long-Term Load (voltage) |
| SLL | Score Linked List |