| SIL(S) | Squamous Intraepithelial Lesion(S) 
| Others |
| SILS | School of Information and Library Science
| Others |
| SILS | School of Information and Library Studies
| Others |
| SILS | School of International Liberal Studies
| Others |
| SILS | Semi Independent Living Services
| Others |
| SILS | Single Incision Laparascopic Surgery
| Others |
| SILS | Single Incision Laparoscopic Surgery
| Others |
| SILS | Society of International Law Singapore
| Others |
| SILS | Southwark Inclusive Learning Service
| Others |
| SILS | Stabilizing Indigenous Languages Symposium
| Others |
| SILS | Standard for Inter-operable LAN Security
| Others |
| SILS | Standard for Interoperable Lan Security
| Others |
| SILS | Structured Independent Language Study
| Others |
| SILS | Student Information Logging System
| Others |
| SILS | Summer Institute for Life Sciences
| Others |
| SILS | Supply in Line Sequence
| Others |
| SILS | Swammerdam Institute for Life Sciences
| Others |
| SILS | Swiss International Law School
| Others |