| Acronym | Definition |
|---|
| IMSS➣Instituto Mexicano del Seguro Social (Spanish: Mexican Social Security Institute) |
| IMSS➣Istituto e Museo di Storia della Scienza (Italian) |
| IMSS➣InterScan Messaging Security Suite |
| IMSS➣International Museum of Surgical Science |
| IMSS➣International Mass Spectrometry Society |
| IMSS➣Internet and Management Support for Storage |
| IMSS➣Institute of Materials Structure Science (Japan) |
| IMSS➣Immigrant and Multicultural Services Society (Prince George, British Columbia, Canada) |
| IMSS➣Independence Marketing Systems and Solutions (software) |
| IMSS➣Irish Mass Spectrometry Society |
| IMSS➣Information Management Systems & Services |
| IMSS➣International Medical Support Services |
| IMSS➣International Macrobiotic Shiatsu Society |
| IMSS➣Image Management Systems and Support Corporation |
| IMSS➣International Maritime Service & Survey Ltd. (various locations) |
| IMSS➣Intermountain States Seminar |
| IMSS➣Institut Municipal de Serveis Socials (French) |
| IMSS➣Importa Madres Su Salud (México) |
| IMSS➣Inter-Movement Support System |
| IMSS➣Information Management and Security Staff (US Department of Justice) |
| IMSS➣Integrated Mission Support System |
| IMSS➣Internet Multimedia Sprachensystem (German) |
| IMSS➣International Math and Science Study |
| IMSS➣Integrated Management Safety Standards |
| IMSS➣Improved Modular Sleeping System (US Army) |