MAGMA
| Acronym | Definition |
|---|---|
| MAGMA | Multicultural Association of the Greater Moncton Area (Canada) |
| MAGMA | Minimal Architecture for Generalized Markup Applications (early name for eXtensible Markup Language, XML) |
| MAGMA | Mountain Area Gem and Mineral Association (est. 2000; North Carolina) |
| MAGMA | Mid-America Gospel Music Association (Farmington, MO) |
| MAGMA | Multicast and Anycast Group Membership Working Group (IETF) |