| 9310 | Flying school operation | |
| 7131 | Flying, charter | |
| 3419 | Flypaper manufacturing | |
| 3320 | Foam rubber mattress manufacturing | |
| 3832 | Fog alarm equipment, electric, manufacturing | |
| 3111 | Foie gras, pate de, manufacturing | |
| 3824 | Foil wrapping machine manufacturing | |
| 3720 | Foil, gold, manufacturing | |
| 3720 | Foil, non-ferrous metal, except precious, manufacturing | |
| 3419 | Folder, photograph, manufacturing | |
| 3824 | Folding and cutting machine manufacturing, paper | |
| 1210 | Foliage or branch, ornamental purpose, gathering in forest | |
| 3620 | Foliage, glass, manufacturing | |
| 3119 | Fondant manufacturing | |
| 9600 | Food and agriculture organization of the united nations | |
| 3824 | Food chopper, industrial, manufacturing | |
| 3121 | Food colouring manufacturing | |
| 3819 | Food container, tim, manufacturing | |
| 9100 | Food inspection agency, governmental | |
| 3824 | Food mixer, industrial, manufacturing | |
| 3824 | Food packing and canning machinery manufacturing | |
| 8330 | Food processing machinery rental service | |
| 9320 | Food research laboratory, not manufacturing | |
| 9490 | Football association | |
| 9490 | Football club | |
| 3903 | Football equipment, excluding uniform, manufacturing | |
| 9490 | Football field operation | |
| 3903 | Football manufacturing | |
| 3240 | Footwear, excluding rubber and rubber soled made by rubber product manufacturers | |
| 3559 | Footwear, rubber soled, made by rubber product manufacturers | |
| 3319 | Footwear, wooden, manufacturing | |
| 8103 | Foreign exchange control board | |
| 8103 | Foreign exchange dealing | |
| 9600 | Foreign government legation | |
| 1210 | Forest conservation services | |
| 1210 | Forest fire protection services | |
| 1220 | Forest material hewing and rough shaping | |
| 1210 | Forest nursery | |
| 1210 | Forest planting | |
| 1210 | Forest replanting | |