| 51763 | Inocencio Uzkudun | 2 | 1718 | 1746 |
| 43532 | Iparraldeko Konfederazio Hidrografikoa | 1 | 1969 | 1969 |
| 43428 | Irurako udala | 1 | 1976 | 1976 |
| 53149 | Isabel Sorarrain | 1 | 1713 | 1713 |
| 53222 | Isabela Irazusta | 2 | 1729 | 1729 |
| 42266 | Isidoro Mujika Arrue | 2 | 1961 | 1975 |
| 42467 | Isidro Iraola | 1 | 1971 | 1971 |
| 43424 | Isidro Iturzaeta | 1 | 1965 | 1965 |
| 43185 | Isidro Mujika Arrue | 1 | 1971 | 1971 |
| 42569 | jabekideen izenean | 1 | 1975 | 1975 |
| 52953 | Jacinta Barrenetxea | 1 | 1694 | 1694 |
| 53357 | Jacinta Mujika | 1 | 1744 | 1744 |
| 51734 | Jacinto Beobide | 9 | 1653 | 1781 |
| 43415 | Jacinto Eizmendi Usandizaga | 1 | 1961 | 1961 |
| 52043 | Jacinto Ieregi | 1 | 1697 | 1697 |
| 42339 | Jacinto Irazu | 3 | 1970 | 1973 |
| 42832 | Jacinto Irazu Atxaga | 2 | 1964 | 1965 |
| 52952 | Jacinto Olaetxea | 1 | 1694 | 1694 |
| 53323 | Jacinto Oyas Aedo | 1 | 1688 | 1688 |
| 43192 | Jacinto Telleria Albisu | 1 | 1971 | 1971 |
| 46082 | Jacobo Carretero Viva | 1 | 1969 | 1969 |
| 43426 | Jacobo Carretero Vivar | 1 | 1973 | 1973 |
| 53198 | Jaime Juansaran | 1 | 1718 | 1718 |
| 53497 | Javier de Sarasua Muguerza | 1 | 1885 | 1885 |
| 43182 | Javier Ezkiaga | 1 | 1971 | 1971 |
| 42779 | Javier Iraola Segurola | 1 | 1972 | 1972 |
| 48250 | Jazinto Irazu | 2 | 1956 | 1956 |
| 48256 | Jazinto Irazu | 1 | 1956 | 1956 |
| 43343 | Jeronima Irazu Atxaga | 2 | 1949 | 1949 |
| 51772 | Jerónimo Alkizalete | 1 | 1746 | 1746 |
| 47230 | Jeronimo Alkizalete Roteta | 1 | 1741 | 1741 |
| 53559 | Jerónimo Arbila | 1 | 1877 | 1877 |
| 51791 | Jerónimo Beroiz | 11 | 1692 | 1764 |
| 51744 | Jerónimo Eleizondo | 3 | 1732 | 1808 |
| 52781 | Jerónimo Ezkamendi | 1 | 1770 | 1770 |
| 53133 | Jerónimo Galdós | 1 | 1711 | 1711 |
| 52131 | Jerónimo Ignacio Usobiaga | 1 | 1787 | 1787 |
| 42503 | Jeronimo Muñoa Otaño | 1 | 1969 | 1969 |
| 53542 | Jerónimo Orkazagirre | 1 | 1857 | 1857 |
| 51885 | Jerónimo Rekondo | 5 | 1770 | 1857 |
| 51817 | Jerónimo Tapia | 5 | 1759 | 1784 |
| 42441 | Jesus Agirre | 1 | 1968 | 1968 |
| 42992 | Jesus Aizpurua | 1 | 1974 | 1974 |
| 42387 | Jesus Irazusta Iraola | 1 | 1964 | 1964 |
| 48260 | Jesus Lizarralde | 1 | 1956 | 1956 |
| 43414 | Jesus Lizarralde Sorrarain | 1 | 1960 | 1960 |
| 42694 | Jesus Maria Narbarte | 1 | 1975 | 1975 |
| 43036 | Jesus Otegi | 1 | 1974 | 1974 |
| 42554 | Jesus Otegi Dandreau | 1 | 1973 | 1973 |
| 42960 | Jesus Otegi Dandreaux | 2 | 1950 | 1965 |
