In this section you can find information about the towns included in the study
| Town | Dialects | Maps | Records |
| Orbaitzeta | 142 | ||
| Orbara | 9 | ||
| Ordériz | 0 | ||
| Orègue | 2 | ||
| Oricáin | 0 | ||
| Orísoain | 0 | ||
| Orkoien | 0 | ||
| Orokieta | 7 | ||
| Orondritz | 0 | ||
| Oronoz | 12 | ||
| Oronz | 0 | ||
| Ororbia | 1 | ||
| Oroz-Betelu | 0 | ||
| Orreaga/Roncesvalles | 53 | ||
| Orrio | 1 | ||
| Orsanco | 5 | ||
| Osa | 0 | ||
| Osacáin | 0 | ||
| Osácar | 1 | ||
| Osinaga | 0 | ||
| Oskotz | 8 | ||
| Ossès | 16 | ||
| Ostabat-Asme | 2 | ||
| Osteritz | 2 | ||
| Ostiz | 1 | ||
| Oteiza | 0 | ||
| Pamplona | 12 | ||
| Puente la Reina | 0 | ||
| Pueyo | 0 | ||
| Ripa | 1 | ||
| Roncal | 0 | ||
| Sada | 0 | ||
| Saigots | 1 | ||
| Saldias | 29 | ||
| Salinas de Ibargoiti | 0 | ||
| Salinas de Oro | 0 | ||
| Saragüeta | 0 | ||
| Sarasa | 0 | ||
| Sarasate | 0 | ||
| Sarasibar | 1 | ||
| Sarriés | 0 | ||
| Satrustegi | 0 | ||
| Setoain | 1 | ||
| Sorauren | 0 | ||
| Soule | 11 | ||
| Soule (low navarrese - navarro-labourdin) | 0 | ||
| St-Esteben | 9 | ||
| St-Étienne-de-Baïgorry | 58 | ||
| St-Jean-le-Vieux | 6 | ||
| St-Jean-Pied-de-Port | 122 |
