| Acronym | Definition |
|---|
| MESO➣Multi-community Environmental Storm Observatory |
| MESO➣Marine Environmental Support Office (San Diego, CA) |
| MESO➣Musicians Emeritus Symphony Orchestra (Seattle, WA) |
| MESO➣Multi-Ethnic Student Organization (various schools) |
| MESO➣Municipal Electric Systems of Oklahoma, Inc. (Oklahoma City, OK) |
| MESO➣Middle East Studies Organization (City University of New York) |
| MESO➣Micro-Enterprise Services Organization (Portland, OR) |