| Acronym | Definition |
|---|
| FSSE➣Fédération Suisse des Sports Équestres (French: Swiss Federation of Equestrian Sports; Switzerland) |
| FSSE➣Faculty Survey of Student Engagement (various schools) |
| FSSE➣Fédération Sénégalaise des Sports Équestres (French: Senegalese Federation of Equestrian Sports; Senegal) |
| FSSE➣Fire Support Software Engineering |
| FSSE➣Forward Service Support Element |
| FSSE➣Franciscan Sisters of Saint Elizabeth |
| FSSE➣Fine Sun Sensor Electronics |
| FSSE➣Free-Standing Single Ended |