| Acronym | Definition |
|---|
| MACHA➣Mid-Atlantic Collegiate Hockey Association (est. 1997) |
| MACHA➣Michigan Automated Clearing House Association (now Payments Authority, Inc.) |
| MACHA➣Mid-America Collegiate Hockey Association |
| MACHA➣Multi Agency Community Housing Association (est. 1991; Adelaide, South Australia, Australia) |
| MACHA➣Mid-America College Health Association (American College Health Association) |
| MACHA➣Mid-Atlantic Clearing House Association (Hanover, MD) |