| Rank | Abbreviation | Meaning |
|---|
| ***** | ZSL | Zjednoczone Stronnictwo Ludowe
| |
| ***** | ZSL | Zjednoczone Stronnictwo Ludowe (Polish: United Peasant Party)
| |
| ***** | ZSL | Zambezi Safari Lodges
| |
| ***** | ZSL | Zamboni Shareware Links
| |
| ***** | ZSL | ZIMBABWE SIGN LANGUAGE
| |
| **** | ZSL | Zylog Systems Limited
| |
| **** | ZSL | Z Specification Language
| |
| **** | ZSL | Zero Slot LAN
| |
| **** | ZSL | Zoological Society of London (UK)
| |
| **** | ZSL | Zylog Systems Limited (Edison, New Jersey)
| |
| **** | ZSL | zylog systems ltd
| |
| **** | ZSL | Zoological Society of London
| |
| *** | ZSL | Zentrum für Selbstbestimmtes Leben
| |
| *** | ZSL | Zen Securities Ltd
| |
| *** | ZSL | Zoological Society of London's
| |
| *** | ZSL | Zero Suppression Logic
| |
| *** | ZSL | Ultrashort Silver Proshares (American Stock Exchange [AMEX])
| |
| ** | ZSL | Zuari Seeds Limited (India)
| |
| ** | ZSL | Zenith Software Limited
| |
| ** | ZSL | Zero Slot
| |
| ** | ZSL | Zenith Software Ltd
| |
| ** | ZSL | Zoos Sales List
| |
| * | ZSL | Zen Securities Limited
| |
| * | ZSL | Zenith Software Limited (est. 1996)
| |
| * | ZSL | Zend Search Lucene
| |