| P | Philology; Linguistics | |
| PA | Greek language and literature; Latin language and literature | |
| PB | Modern languages; Celtic languages | |
| PC | Romanic languages | |
| PD | Germanic languages | |
| PE | English language | |
| PF | West Germanic languages | |
| PG | Slavic languages; Baltic languages; Albanian language | |
| PH | Uralic languages; Basque language | |
| PJ | Oriental philology and literature | |
| PK | Indo-Iranian philology and literature | |
| PL | Languages of Eastern Asia, Africa, Oceania | |
| PM | Hyperborean, Indian, and artificial languages | |
| PN | Literature (General) | |
| PQ | French literature - Italian literature - Spanish literature - Portuguese literature | |
| PR | English literature | |
| PS | American literature | |
| PT | German literature - Dutch literature - Flemish literature since 1830 - Scandanavian literature - Old Norse literature: Old Icelandic and Old Norwegian - Modern Icelandic literature - Faroese literature - Danish literature - Norwegian literature - Swedish literature | |
| PZ | Fiction and juvenile belles lettres |