F.
- F.2.M. - Female "To" Male
- F.2.N. - Female "To" Neutral
- F.A.F.A.B. - Forcibly Assigned Female At Birth (Note: This term is usually reserved for those who are intersex.)
- F.A.M.A.B. - Forcibly Assigned Male At Birth (Note: This term is usually reserved for those who are intersex.)
- F.A.R.T. - Feminist Appropriating Reactionary/Ridiculous Transphobe
- Femboy - Typically refers to an individual who identifies as a boy/man, but presents in a feminine manner.
- F.F.S. - Facial Feminization Surgery
- F.H.T. - Feminizing Hormone Therapy
- Fishmouth - A type of FTM top surgery.
- F.M.S. - Facial Masculinization Surgery
- F.P.B. - Female Pattern Baldness
- Follicular Phase - The phase of the menstrual cycle during which eggs mature in the ovaries.
- F.T.M. - Female To Male
- F.T.N. - Female To Neutral
