| FOCAS | Faint Object Classification and Analysis System 
| Others |
| FOCAS | FANUC Open CNC API Specifications
| Others |
| FOCAS | Fellowship Of Christian Adult Singles
| Others |
| FOCAS | Fellowship Of Christian Anglers Society
| Others |
| FOCAS | Forum on Communications and Society
| Others |
| FOCAS | Forward Crash Avoidance Systems
| Others |
| FOCAS | Foundation of Compassionate American Samaritans
| Others |
| FOCAS | Friends Of Caring Animal Shelters
| Others |
| FOCAS | Friends Of County Animal Shelters
| Others |
| FOCAS | Friends of the Orange County Animal Shelter
| Others |
| FOCAS | Fundamentals Of Collective Adaptive Systems
| Others |