P.
- Packer - An item (typically phallic in nature) which is placed in one's underwear to give the outward apperance of having a bulge.
- Passing - When someone who is transgender is easily or often assumed to be the gender they identify as without revealing said gender to others.
- Periareolar - A type of FTM top surgery.
- Perisex - A term with a prefix meaning "around" or "near." Someone who is not intersex.
- Period Underwear - An alternative to pads and tampons.
- P.F.A.B. - Presumed Female At Birth
- Phalloplasty - A type of FTM bottom surgery.
- P.M.A.B. - Presumed Male At Birth
- Prin - Gender neutral alternative to prince/princess.
- Pronoun - A third-person term used to replace one's name in a sentence. Often used to indicate gender identity.
- Puberty Blockers - Treatment used to pause puberty.