| Rank | Abbreviation | Meaning |
|---|
| ***** | ISUS | Innovation Start-Up Scheme
| |
| **** | ISUS | Ishares II Plc (London Stock Exchange [LSE])
| |
| **** | ISUS | Integrated-Sensor Underwater System
| |
| **** | ISUS | Imaging Stratospheric Ultraviolet Spectrometer
| |
| **** | ISUS | Information Services and User Support
| |
| **** | ISUS | International Society for Utilitarian Studies
| |
| **** | ISUS | Improved Solutions for Urban Systems, Inc.
| |
| **** | ISUS | Iowa State University of Science
| |
| **** | ISUS | International Society of Ultrasonic Surgery
| |
| **** | ISUS | Integrated Solar Upper Stage
| |
| *** | ISUS | In Situ Ultraviolet Spectrophotometer
| |