| 48285 | Tomas Arrastoa | 1 | 1957 | 1957 |
| 43105 | Tomas Arrastoa Iguaran | 1 | 1969 | 1969 |
| 52572 | Tomás Arruebarrena | 1 | 1779 | 1779 |
| 52834 | Tomás Eizmendi | 1 | 1721 | 1721 |
| 47454 | Tomas Fagoaga Rementeritegi | 1 | 1652 | 1652 |
| 48278 | Tomas Garikano Goñi | 1 | 1956 | 1956 |
| 42966 | Tomas Irazu Amondarain | 1 | 1965 | 1965 |
| 52167 | Tomás Maiz | 1 | 1734 | 1734 |
| 52466 | Tomás Muñoa | 1 | 1821 | 1821 |
| 42515 | Tomas Otamendi Arratibel | 2 | 1973 | 1973 |
| 48136 | Tomas Urdapilleta | 1 | 1752 | 1752 |
| 51982 | Tristan Lizarraga | 2 | 1653 | 1758 |
| 42969 | Txapartegi Hermanos | 1 | 1965 | 1965 |
| 43541 | Ubar Ingeniariak | 1 | 1968 | 1968 |
| 43018 | Udala | 1 | 1950 | 1950 |
| 42269 | Ugalde Rekondo ahizpak | 2 | 1974 | 1975 |
| 43146 | Urbana Izagirre Segurola | 1 | 1961 | 1961 |
| 42999 | Urbar Ingenieros S.A. | 11 | 1960 | 1975 |
| 51685 | Urnieta | 1 | 1694 | 1694 |
| 53158 | Úrsula Lizaristi | 1 | 1713 | 1713 |
| 52350 | Úrsula Otamendi | 1 | 1700 | 1700 |
| 42476 | Valentin Mayoz Iraola | 2 | 1958 | 1969 |
| 42561 | Venancio Segurola | 3 | 1969 | 1975 |
| 42448 | Venancio Segurola Iraola | 4 | 1965 | 1974 |
| 52057 | Vicenta Olaskoaga | 1 | 1721 | 1721 |
| 51904 | Vicenta Ormaetxea | 1 | 1776 | 1776 |
| 53184 | Vicente Latorre | 1 | 1795 | 1795 |
| 43714 | Vicente Tapia | 1 | 1963 | 1963 |
| 53630 | Vicente Ugalde | 1 | 1879 | 1879 |
| 53508 | Vicente Ugalde Anzisu | 1 | 1891 | 1891 |
| 42437 | Victor Aramburu | 1 | 1966 | 1966 |
| 53187 | Víctor José Kamio | 1 | 1818 | 1818 |
| 43545 | Victor Sorarrain Ibargun | 1 | 1969 | 1969 |
| 43434 | Victoriana Zubeldia Sorarrain | 3 | 1965 | 1971 |
| 42492 | Victoriano Aizpurua | 1 | 1972 | 1972 |
| 42968 | Victoriano Aizpurua Cestona | 1 | 1965 | 1965 |
| 42979 | Vicuña SA | 1 | 1965 | 1965 |
| 43556 | Viuda de Uzkudun | 1 | 1971 | 1971 |
| 43540 | Zabala Alay anaiak | 1 | 1963 | 1963 |
| 52299 | Zarauzko Santa Klara komentua | 2 | 1703 | 1711 |
| 42313 | Zegadunen elkartear | 1 | 1966 | 1966 |
| 51684 | Zizurkil | 1 | 1694 | 1694 |
| 46035 | Zizurkilgo Udala | 1 | 1975 | 1975 |
