| 2812 | Fermentation tanks, heavy gauge metal, manufacturing | |
| 5220 | Fermented malt beverages, retail | |
| 5122 | Fermented malt beverages, wholesale | |
| 2411 | Ferric chloride, manufacturing | |
| 2411 | Ferric oxide pigments, manufacturing | |
| 2411 | Ferric oxides, manufacturing | |
| 3511 | Ferries, building | |
| 6110 | Ferries, operating on coastal waters | |
| 6120 | Ferries, operating on rivers or inland lakes (except Great Lakes) | |
| 6110 | Ferries, operating on the Great Lakes | |
| 6120 | Ferries, operation of | |
| 6110 | Ferries, railway, operating on coastal waters | |
| 3699 | Ferris wheels, manufacturing | |
| 2691 | Ferrite, manufacturing | |
| 2710 | Ferro-alloys, manufacturing | |
| 5142 | Ferroalloys, wholesale | |
| 2710 | Ferro-chromium, manufacturing | |
| 2411 | Ferrocyanides, manufacturing | |
| 2710 | Ferro-manganese, manufacturing | |
| 2710 | Ferro-molybdenum, manufacturing | |
| 2710 | Ferro-nickel, manufacturing | |
| 2710 | Ferroniobium, manufacturing | |
| 2710 | Ferro-phosphorus, manufacturing | |
| 2710 | Ferro-silicon, manufacturing | |
| 2710 | Ferro-titanium, manufacturing | |
| 2710 | Ferro-tungsten, manufacturing | |
| 5110 | Ferrous and non-ferrous metal ores and concentrates, combined, wholesale agents and brokers | |
| 5110 | Ferrous and non-ferrous metals, combination, wholesale agents and brokers | |
| 2891 | Ferrous forgings, unfinished, made from purchased iron or steel | |
| 5142 | Ferrous metal concentrates, wholesale | |
| 5110 | Ferrous metal ores and concentrates, agents and brokers | |
| 5142 | Ferrous ores and concentrates, wholesale | |
| 2710 | Ferro-vanadium, manufacturing | |
| 3511 | Ferryboats, building | |
| 8512 | Fertility clinic | |
| 5149 | Fertilizer and fertilizer materials, wholesale | |
| 0140 | Fertilizer application for crops | |
| 0140 | Fertilizer application service | |
| 2412 | Fertilizer materials, nitrogenous and phosphatic, manufacturing | |
| 0140 | Fertilizer spreading service (except from aircraft) | |