| Acronym | Definition |
|---|
| TNF | Tumor Necrosis Factor |
| TNF | Thursday Night Football |
| TNF | The Northface (outdoor equipment business) |
| TNF | The Northern Frontier (Roblox game) |
| TNF | Tahoe National Forest |
| TNF | The Nippon Foundation (Japan) |
| TNF | Tuesday Night Football |
| TNF | Toenail Fungus |
| TNF | The Nostalgia Forum |
| TNF | Technical Nuclear Forensics |
| TNF | Trace Normal Form (computer programming utility) |
| TNF | Theater Nuclear Forces |
| TNF | Two Nations Force (gaming clan) |
| TNF | The NetBSD Foundation |
| TNF | True Negative Fraction |
| TNF | Thirteen Ninety Four (1394) |
| TNF | Technically Not Feasible |
| TNF | Tactical Nuclear Forces |
| TNF | Tax File Number (Australia) |
| TNF | That's Not Funny |