| Term | Full Form | Category |
|---|---|---|
| FLCS | Chinsali, Zambia | Others |
| FLCS | Fiat Lancia Club Serbia | Others |
| FLCS | Finger Lakes Christian School | Others |
| FLCS | Fluorescence Lifetime Correlation Spectroscopy | Others |
| FLCS | Force Level Control System (obsolete term) | Others |
| FLCS | Foreign Language and Culture Society | Others |
| FLCS | Forest Lake Christian School | Others |
| FLCS | Frankton Lapel Community Schools | Others |