| 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) |