FCG
FCG is an abbreviation for:
- Flux compression generator (german flux compression generator ), a non-nuclear EMP weapon
- Fragmenta Comicorum Graecorum, an edition of the Greek comedy fragments from August Meineke
- Group of Christian union, a political group within the Austrian Trade Union Federation
- Free Christian Community, a church from the Association of Pentecostal communities, see Federation of Pentecostal Churches
- The football clubs: FC Gütersloh 2000, a sports club based in North Rhine -Westphalia
- FC Grenchen, a sports club from the canton of Solothurn, Switzerland
- Disambiguation
- Abbreviation