- ZSI stands for Zertz Scheid Ingenieurgesellschaft (German: Zertz Scheid Engineering Company)
- ZSI stands for Zintegrowany System Informatyczny (Polish: Integrated Information System)
- ZSI stands for Zoological Survey of India
- ZSI stands for Zentrum für Soziale Innovation (Vienna, Austria)
- ZSI stands for Zolera SOAP Infrastructure
- ZSI stands for Zaurus Software Index
- ZSI stands for Zamil Steel Industries (Dammam, Saudi Arabia)
- ZSI stands for Zeland Software, Inc. (Fremont, CA)
- ZSI stands for Zentralstelle für die Sicherheit in der Informationstechnik (German Information Security Agency)
- ZSI stands for Z Solar Inertial
Abbreviations And Their Meaning