| Abbreviation | Definition |
|---|---|
| MTAD | Montessori Teachers Association of Delaware |
| MTAR | Middle Tennessee Association of REALTORS |
| MTAS | Massage Therapist Association of Saskatchewan |
| MTFA | Mini Top Fuel Association |
| MTFA | Missouri Trout Fisherman Association |
| MTFA | Muslimin Trust Fund Association |
| MTLA | Maine Trial Lawyers Association |
| MTLA | Mark Twain Library Association |
| MTLA | Maryland Trial Lawyers Association |
| MTLA | Minnesota Theological Library Association |
| MTLA | Minnesota Trial Lawyers Association |
| MTLA | Montana Trial Lawyers Association |
| MTMA | Machine Tool Merchants Association |
| MTMA | Malaysian Textile Manufacturers Association |
| MTMA | Mountain Tailgate Market Association |
| MTMA | Myanmar Timber Merchants Association |
| MTNA | Middle Tennessee Nursery Association |
| MTOA | Marine Trader Owners Association |
| MTOA | Marine Trawler Owner Association |
| MTOA | Marine Trawler Owners Association |