| Acronym | Definition |
|---|
| SIEM | Security Information and Event Management |
| SIEM | Sistema de Información Empresarial Mexicano (Mexican Enterprise Information System) |
| SIEM | Società Italiana per l'Educazione Musicale (Italian society for musical education) |
| SIEM | Secretariat Institution of Engineers Malaysia |
| SIEM | Società Italiana di Elettromagnetismo (Italian Electromagnetic Society) |
| SIEM | Sistema de Información Especializado En Microfinanzas (Spanish: Specialized Information System in Microfinance; aka Micro Finance Solutions, Inc.) |
| SIEM | Security Incident and Event Manager |
| SIEM | Simulação Para O Ensino Médio (Portuguese: Simulation for High School; event simulation conferences; São Paulo, Brazil) |
| SIEM | System Information Exchange Matrix |