| Inscription | Country | Years | #Issued |
| Falkland Islands | Falkland Islands | 1878- | 600 |
| Fantippo | Bogus | ||
| Federacion | Venezuela | 1863-65 | 7 |
| Federated Malay States | Malaya | 1900-34 | 80 |
| Federation du Mali | Mali | 1959-60 | 10 |
| Fernando Poo | Spanish Guinea | 1868-1961 | 270 |
| Fero(ovpt) | Italy: Aegean Islands(isl) | 1912-32 | <125(all isl)- |
| Fezzan Ghadames | Libya (French occ.) | 1946 | 15 |
| Fiji | Fiji | 1870- | 650 |
| Filipinas | Philippines | 1872-98 | 200 |
| Finland | Finland | 1875- | 1100 |
| Fisso(ovpt) | Italy: Aegean Islands(isl) | 1912-32 | <125(all isl)- |
| Fiume | Fiume | 1918-24 | 230 |
| Foroyar | Denamark: Faroe Islands(aut/isl) | 1975- | 220 |
| Franco | Switzerland | 1854-62 | 30 |
| Franco Bollo di Stato | Italy (official) | 1875 | 8 |
| Franco Bollo Postalle | Italy | 1867 | 7- |
| Franco Scrisorei | Romania: Moldavia-Walachia(cty) | 1862-64 | 12 |
| Frandia | Bogus | ||
| Franqueo | Spanish South America | 1873 | 2 |
| Franqueo Oficial(ovpt) | Spanish South America | 1890? | |
| Franquicia Postal | Spain (right) | 1881 | 1 |
| Frimarke Localbref | Sweden (local post) | 1856-62 | 2 |
| Fuerstentum Liechtenstein | Liechtenstein | 1912- | 900 |
| Fujeira | Fujeira(exploitative)(Fujairah) | 1964-73 | 950 |
If there are any missing inscription, tell me : marcosampaio@grupo.bfe.pt
