| factor | factor |
| factor market | mercado de factores |
| factor of production | factor productivo |
| factorial | factorial |
| factorize | descomponer en factores |
| factory | planta |
| factory farming | cultivo de fábrica |
| Factory method pattern | Factory Method |
| factotum | dije |
| factual | efectivo |
| Facula | Mancha solar |
| Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa | Universidad Nueva de Lisboa |
| facultative | facultativo |
| Facultative anaerobic organism | Anaerobio facultativo |
| faculty | capacidad |
| Facultés universitaires Notre-Dame de la Paix | Facultades Universitarias Notre Dame de la Paix |
| Faculus | Fácula |
| Facundo Arana | Facundo Arana |
| fad | novedad |
| fade | decolorar |
| fade away | descolorarse |
| faded | descolorido |
| Fadesa Inmobiliaria | Fadesa |
| fading | desvanecimiento |
| Fado | Fado |
| Fadrique Alfonso of Castile | Fadrique Alfonso de Castilla |
| faecal | fecal |
| faecal bacterium | bacteria fecal |
| faeces | heces |
| faena | faena |
| Faenza | Faenza |
| Faeroe Islands | Islas Feroe |
| Faeroese | feroés |
| Faerûn | Faerûn |
| Fafe | Fafe |
| Fafner of the Azure | Sōkyū no Fafner |
| Fafnir | Fafner |
| fag | homosexual |
| Fagaceae | Fagaceae |
| Fagales | Fagales |
| faggot | huevón |
| faggotry | mariconería |
| Fagopyrum | Fagopyrum |
| Fagus crenata | Fagus crenata |
| Fahd of Saudi Arabia | Fahd bin Abd Aziz |
| Fahrenheit | Fahrenheit |
| Fahrni | Fahrni |
| Faial Island | Isla de Faial |
| Faidherbia albida | Faidherbia albida |
| Faido | Faido |
| faience | loza |
| fail | fallar |
| fail badly | fallar miserablemente |
| fail sadly | fallar miserablemente |
| fail to | dejar de |
| fail to agree | disentir |
