| Acronym | Definition |
|---|
| MTAN➣Minerals Technical Advice Note (mining policy advice; Wales, UK) |
| MTAN➣Midwest Tribal Aquaculture Network (est. 1992; US FWS) |
| MTAN➣Maine Taxpayers Action Network |
| MTAN➣Multidrug Transporter Activation Protein |
| MTAN➣Music Therapy Association of Northridge (California) |