TNFF
| Acronym | Definition |
|---|---|
| TNFF | The National Fantasy Fan Federation (website) |
| TNFF | Texas Neurofibromatosis Foundation |
| TNFF | Transparent Network Failover Failback |
| TNFF | Thai Nippon Fish Farm (Thailand) |
| TNFF | The New Final Fantasy (gaming) |
| TNFF | Travelling Northern Film Festival |
| TNFF | Thursday Night Fly Fishing Club |