F.
- F.A.R.T. - Feminist Appropriating Reactionary 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
- Fishmouth - A type of FTM top surgery.
- F.M.S. - Facial Masculinization Surgery.
- F.T.M. - Female To Male