English abbreviations from fo to foc
- FO (Forward Observer)
- F.O. (Flight Officer)
- FO/FAC (Forward Observer/Forward Air Controller)
- FOA (Field Operating Agency)
- FOAD (Fuck Off And Die)
- FOAF (Friend Of A friend)
- FOAL (Friends Of Animal League)
- FOAW (Friends of Ascot Waters)
- FOB (Fuel On-Board)
- FOBA (Fair Oaks Beautification Association)
- FOBAF (Friends Of Boggs Academy Foundation)
- FOBB (Flag Officer Billet Board)
- FOBE (Fractional Out of Band Energy)
- FOBT (Fixed Odds Betting Terminal)
- FOC (Full Operational Capability)