TNSF
| Acronym | Definition |
|---|---|
| TNSF | Tamil Nadu Science Forum (est. 1980; India) |
| TNSF | Tufts Neighborhood Service Fund (Tufts University; Massachusetts) |
| TNSF | The New Sound of Funk (band) |
| TNSF | Talk of the Nation Science Friday (NPR radio show) |
| TNSF | Technicolor Network Services France (Saint-Cloud, France) |