| Acronym | Definition |
|---|
| FCSN➣Federation for Children with Special Needs |
| FCSN➣Firefighter Cancer Support Network |
| FCSN➣Friends of Children with Special Needs |
| FCSN➣Football Club Serquigny Nassandres (French football club) |
| FCSN➣Football Club Saint-Nazairois (French football club) |
| FCSN➣Fargo Catholic Schools Network |
| FCSN➣Freiburger Cardiac Survival Network |
| FCSN➣Seaman, Fire Controlman Striker (Naval Rating) |