TACN
| Acronym | Definition |
|---|---|
| TACN | Triazacyclononane |
| TACN | Texas Association of Christian Networks (prayer network) |
| TACN | Toyota Automobiel Club Nederland (Dutch: Netherlands Toyota Automobile Club; est 1992) |
| TACN | Turkish Association for the Conservation of Nature |
| TACN | Tactical Air Control Net |
| TACN | Tactical Area Communications Network(s) |
| TACN | The Amazing Captain Neato (bulletin board system) |
| TACN | TetrAmine Copper Nitrate |