| Acronym | Sense | Language | Topics |
|---|---|---|---|
| PA | Présence Africaine | In French | → Serial publications, periodicals → Politics → Africa |
| PA | Polyamide | In English | → Plastic industry → Chemicals → Chemistry |
| PA | Petites Annonces | In French | → Graphic industries, printing, publishing |
| PA | Parapsychological Association (www.parapsych.org) | In English | → Associations → Psychology → Occult sciences |
| PA | Pyrénées-Atlantiques | In French | → History |
| PA | Popular Astronomy | In English | → Serial publications, periodicals → Astronomy |
| Pa | Pascal | In many languages | → Physics |
| PA | Préjudice d'Agrément | In French | → Law, jurisprudence |
| PA | Puissance Atteinte | In French | → Energy economics |
| PA | Proponent Agency | In English | |
| PA | Procurement Appropriations | In English | |
| PA | Principal Adjoint | In French | → Education |
| PA | Proviseur Adjoint | In French | → Education |
| PA | Protocole Additionnel = AP | Additional Protocol | In English |
In French | → International law |
| PA | Protective Antigen | In English | → Infectious diseases |