| IMMS | Incident Management Message Sets 
| Others |
| IMMS | Independence Middle Magnet School
| Others |
| IMMS | Indian Mound
| Others |
| IMMS | Indian Mound Middle School
| Others |
| IMMS | Individual medication management system
| Others |
| IMMS | Indonesia Mobil Motor Show
| Others |
| IMMS | Inspired Mortgage Management Solutions
| Others |
| IMMS | Institute for Marine Mammal Studies
| Others |
| IMMS | Institute for Materials Manufacturing and Sustainment
| Others |
| IMMS | Instructional Materials Motivation Survey
| Others |
| IMMS | Insurance Marketing and Management Services
| Others |
| IMMS | Integrated Mail Management System
| Others |
| IMMS | Integrated Maintenance Management System
| Others |
| IMMS | Integrated Materials Management System
| Others |
| IMMS | Integrated monitoring and management system
| Others |
| IMMS | Integrated Monitoring and Management Systems
| Others |
| IMMS | Intelligent Material Management System
| Others |
| IMMS | Intermediate Maintenance Management System
| Others |
| IMMS | International Marine Minerals Society
| Others |
| IMMS | International Military Music Society
| Others |
| IMMS | International Money Management System
| Others |
| IMMS | Irma Marsh Middle School
| Others |
| IMMS | Irrigation Management Monitoring Software
| Others |
| imms | Primary immunisations
| Others |