| Acronym | Definition |
|---|
| MTOA➣Metroplex Tennis Officials Association (Texas) |
| MTOA➣Michigan Tactical Officers Association (est. 1988) |
| MTOA➣Marine Trader Owners Association (now Marine Trawler Owners Association) |
| MTOA➣Marine Trawler Owners Association (formerly Marine Trader Owners Association) |
| MTOA➣Michigan Tavern Owners Association |
| MTOA➣Midland Tree Officers' Association (UK) |