| Name | Country | Code | Category | Parent Subdivision | Flag |
|---|---|---|---|---|---|
| Normandie | France | FR-NOR | metropolitan region | ||
| Nouvelle-Aquitaine | France | FR-NAQ | metropolitan region | ||
| Occitanie | France | FR-OCC | metropolitan region | ||
| Oise | France | FR-60 | metropolitan department | ||
| Orne | France | FR-61 | metropolitan department | ||
| Paris | France | FR-75 | metropolitan department | ||
| Pas-de-Calais | France | FR-62 | metropolitan department | ||
| Puy-de-Dôme | France | FR-63 | metropolitan department | ||
| Pyrénées-Atlantiques | France | FR-64 | metropolitan department | ||
| Pyrénées-Orientales | France | FR-66 | metropolitan department |