| P | Philology. Linguistics |
| PA | Greek and Latin languages and literatures |
| PB | Modern languages (General). Celtic languages |
| PC | Romance languages |
| PD | Germanic languages (General). Scandinavian languages |
| PE | English language |
| PF | West Germanic languages |
| PG | Slavic, Baltic, Albanian languages and literature |
| PH | Uralic, Basque languages and literatures |
| PJ | Oriental philology and literature (General). Semitic languages and literature |
| PK | Indo-Iranian languages and literatures |
| PL | Languages and literatures of Eastern Asia, Africa, Oceania |
| PM | Hyperborean, Indian, and Artificial languages |
| PN | Literature (General) |
| PQ | French, Italian, Spanish and Portuguese literatures |
| PR | English literature |
| PS | American literature |
| PT | Germanic literatures |
| PZ | Fiction and Juvenile belles lettres |