| Rank | Abbreviation | Meaning |
|---|
| ***** | SISL | Siemens Information Systems Limited
| |
| **** | SISL | Semi Implicit and Semi Lagrangian
| |
| *** | SISL | SCSI (Small Computer System Interface) Interrupt Steering Logic
| |
| *** | SISL | Standard IRMA Script Language
| |
| *** | SISL | Systems and Internet Security Lab
| |
| *** | SISL | Siemens Information Systems Ltd.
| |
| *** | SISL | Sunbelt Indoor Soccer League
| |
| *** | SISL | Southwest Independent Soccer League
| |
| ** | SISL | Secure Integration Simulation Laboratory
| |
| ** | SISL | Strategic Insurance Services Ltd
| |
| ** | SISL | Surface Irrigation Soil Loss
| |
| ** | SISL | Social and Information Sciences Laboratory
| |
| ** | SISL | Southeast Indoor Soccer League
| |
| * | SISL | Southwest Indoor Soccer League
| |
| * | SISL | South Island Soccer League
| |
| * | SISL | Sunbelt Independent Soccer League
| |
| * | SISL | Soil Information Systems Laboratory
| |
| * | SISL | Sprung Instant Structures Limited
| |
| * | SISL | Somers Isles Shipping Ltd
| |
| * | SISL | Structured Investment Solutions Limited
| |
| * | SISL | System Interrupt Steering Logic
| |
| * | SISL | Stranger In a Strange Land
| |
| * | SISL | Southside Indoor Soccer League
| |
| * | SISL | Sun Industry Standards License
| |
| * | SISL | Southern Illinois the League
| |