MESB
| Acronym | Definition |
|---|---|
| MESB | Metropolitan Emergency Services Board (St. Paul, MN) |
| MESB | Michigan Environmental Science Board |
| MESB | Medical Education Standards Board (UK) |
| MESB | Maintenance Engineering Sdn. Bhd. (est. 1995; Kuala Lumpur, Malaysia) |
| MESB | Minnesota Emergency Services Board |
| MESB | Management Engineering & Systems Branch |