| Abbreviation | Definition |
|---|---|
| SUL | Sanskrit University Library |
| SUL | Stanford University Libraries |
| SULAIR | Stanford University Libraries & Academic Information Resources |
| SULC | Southern University Law Center |
| SULC | Sydney University Liberal Club |
| SULS | Suffolk University Law School |
| SULSA | Scottish Universities Life Sciences Alliance |
| SULSA | Southampton University Laser Sintered Aircraft |
| SUM | State University Medical |
| SUMA | Seattle University Marketing Association |
| SUMMA | Stanford University Minority Medical Alliance |
| SUN | Stanford University Network |
| SUN | Stanford University Networks |
| SUNAC | Stanford University Network Access Control |
| SUNNY | Summer University and New Year |
| SUNO | Southern University at New Orleans |
| SUNQ | See yoU Next Quarter |
| SUNSIH | Student University Network for Social and International Health (Canada) |
| SuNTA | Sudan National Telecentre Academy |
| SUNW | Stanford University Network Workstation |