| Acronym | Definition |
|---|
| USSF➣United States Special Forces (US Army) |
| USSF➣United States Soccer Federation |
| USSF➣United States Space Force (proposed branch) |
| USSF➣United States Surfing Federation (Hermosa Beach, CA) |
| USSF➣United States Space Foundation |
| USSF➣Ukrainian Step by Step Foundation (Ukraine) |
| USSF➣United States Sumo Federation (sumo wrestling) |
| USSF➣United States Special Forces (gaming clan) |
| USSF➣United Sim Special Forces (gaming clan) |