| fort probablement | most probably |
| Fort robuste vigoureux | Fullblooded |
| Fort Rouge | Red Fort |
| Fort Sumner | Fort Sumner |
| Fort Sumter | Fort Sumter |
| Fort Worth | Fort Worth |
| Fort à propos | In the last moment |
| Fort-Dauphin | Tôlanaro |
| Fort-de-France | Fort-de-France |
| Fort-la-Latte | Fort-la-Latte |
| Fort-Mardyck | Fort-Mardyck |
| Fortaleza | Fortaleza |
| Fortaleza Esporte Clube | Fortaleza Esporte Clube |
| Forte fièvre | High fever |
| forte odeur de renfermé | fug |
| forte pluie | downpour |
| forte tête | obstructionist |
| forte-piano | piano |
| fortement | hard |
| fortement charpenté | big-boned |
| fortement marqué | accented |
| forteresse | fortress |
| Forteresse Antonia | Antonia Fortress |
| Forteresse de Bergenhus | Rosenkrantz Tower |
| Forteresse de Fredriksberg | Fredriksberg Fortress |
| Forteresse de Hwaseong | Hwaseong Fortress |
| Forteresse de Königstein | Königstein Fortress |
| Forteresse de la Cabaña | La Cabaña |
| Forteresse de la Solitude | Fortress of Solitude |
| Forteresse de Louisbourg | Fortress of Louisbourg |
| Forteresse de Mimoyecques | Mimoyecques |
| Forteresse de Salses | Fort de Salses |
| Forteresse Digitale | Digital Fortress |
| Forteresse Pierre-et-Paul | Peter and Paul Fortress |
| Forteresse teutonique de Marienbourg | Malbork Castle |
| Fortes chances | Strong chance |
| Fortezza | Franzensfeste |
| Forth | River Forth |
| Forti Corse | Forti |
| fortifiant | tonic |
| fortification | fortification |
| fortifier | fortify |
