Found 7 full forms for FIOS
| Term | Full Form | Category |
|---|---|---|
| FIOS | Federal Institute of Studies 
| Others |
| FiOS | Fiber Optic Service
| Others |
| FiOS | Fiber Optic Services
| Others |
| FiOS | Fiber Optic Services as provided by Verizon
| Others |
| FIOS | Figure It Out s***head
| Others |
| FIOS | Free In and Out Stowed
| Others |
| FIOS | Free In Out Stowed
| Others |