| Acronym | Definition |
|---|
| SUL | Super Ultralight (backpacking) |
| SUL | State University Libraries |
| SUL | Stiff Upper Lip (band) |
| SUL | See You Later |
| SUL | Single User Login (Wikimedia Foundation) |
| SUL | Syracuse University Library (New York) |
| SUL | Secretariado Uruguayo de la Lana (Spanish) |
| SUL | Safe Upper Limit (supplements) |
| SUL | Situation Unit Leader (various organizations) |
| SUL | Small Unit Leader |
| SUL | Science Undergraduate Laboratory (California) |
| SUL | Shimane University Library (Shimane, Japan) |
| SUL | Suggested Users List (social networks) |
| SUL | Schwertransporte Umschlag und Lagerlogistik (German: Heavy Transport and Storage Logistics Handling) |
| SUL | Small Unit Logistics (USMC Advanced Concept Technology Demonstration) |
| SUL | Self Unloader (bulk cargo vessel with own unloading system) |
| SUL | Software Usage List |
| SUL | Simplified User Logistics |
| SUL | Strategic Unit Leader |
| SUL | Saturated Unilateral Link |