| Acronym | Definition |
|---|
| MACSS➣Membre de l'Académie Canadienne des Sciences de La Santé (French: Member of the Canadian Academy of Health Sciences) |
| MACSS➣McGill Anatomy and Cell Biology Students Society |
| MACSS➣Missouri Automated Child Support System |
| MACSS➣Mauritius Automated Clearing and Settlement System (Bank of Mauritius; est. 2000) |
| MACSS➣Massachusetts Cigar Smoking Society |