*Most of these names came to this area before changing back to the original Basque spellings had been done.
Therefore c is used for k or s, as is ch for tx, v for b.*

Aberasturi, Achurra, Acordagoitia, Aguirre, Alacano, Alberdi, Alberro, Albisu, Alcorta, Aldaya, Alzugaray, Amestoy, Anacabe, Anaya, Ancho, Andazola, Ansolabehere, Apodaca, Aranburu, Aramburu, Aranguena, Arano, Araquistain, Arbillaga, Arceniega, Archuleta?, Ardans, Ardohain, Arechabala, Areitio, Arisoto?, Arizmendi, Arrascada, Arregui, Arriaga, Arrien, Arriola, Arruti, Ascasibar,

B

Barainca, Barinaga, Barrenechea, Basabe, Basanez, Beitia, Bengoa, Bengochea, Bengochia, Beristiain, Bermejo?, Bermeosolo, Bicandi, Bicondoa, Bidart, Bidaurreta, Bilbao,

C*

Calzacorta, Carricaburu, Castonguay?Ceresola?Chabot, Ciscar, Coscarart, Curuchet,

D

DeArrieta, Dendary, Domingo, Dominguez, Dufurrena, Duvivier?

E

Echague, Echave, Echebarria, Echegaray, Echegoyen, Echeto, Echevarria, Echeverria, Eguilior, Elexpuru, Elia, Elizagoyen, Elizondo, Elu, Erquiaga, Errea, Errecart, Erro, Eskandon, Esparza, Esquibel, Echebarren, Etchart, Etcheberry, Etchegaray, Etchemendy, Etchepare, Etcheto, Etcheverry, Etchinek,

F

Fagoaga, Fernandez? Fordin, Fundis,

G

Gabica, Gabiola, Gamboa, Gandiaga, Garamendi, Garate, Garcia, Garibay, Garmendia, Garteiz, Garza? Gastanaga, Gastelecutto?, Goicoechea, Gomez, Gonzalez?, Gortari, Goyeneche, Gutierrez?, Guerena,

H

Hachquet, Haro? Heguy, Hernandez? Herrera,

I

Ibarra, Igoa, Imatz, Irigoin, Iriondo, Irurueta, Ispisua, Ithurralde, Iturriaga, Itza, Izaguirre,

J

Jaca, Jauregui, Jayo, Jimenez,

L

Labarry, Laca, Landa, Lapresa, Larios, Larralde, Larraneta, Lasa, Laucirica, Laxague, Lazcano, Lecumberry, Legarza, Leniz, Leonis, Lespade, Lopategui, Lopez, Lostra, Lozoya, Lusar, Lusardi, Luciaga,

M

Marcuerquiaga, Mariluch, Marquez, Martinez?, Menaka, Mendiola, Mendive, Mendoza, Mentaberry, Moiola?, Muguira, Munguia, Muruberria, or is it Mutuberria?

N

Nachiondo, Navarro, Naveran, Narvaiza, Noriega,

O

Obieta, Ochoa, Olabarria, Olagaray, Olague, Olano, Onandia, Ondreako?, Orbe, Ordoqui, Ormachea, Ormaza, Orozco?, Ortiz, Otegui, Ozamis,

P

Pacheco?, Palacio, Paris, Peluaga, Perez?, Pierresteguy, Plaza, Plazola?,

R

Renteria, Rodriquez?,

S

Sabala, Sala?, Saldivar, Salla, Sallaberry, Salutregui, Salvatierra, Samper, Sanchez, Sansinena, Saval, Sarasua, Susperregui, Sustacha,

T

Telleria?, Torrealday, Tourreuil, Trevino?, Turrubiate?

U

Ugalde, Ugaldea, Ugarte, Ugues? Uhalde, Ulibarri, Ulloa, Unamuno, Urdaneta, Ure, Uria, Uriarte, Uribe, Uriguen, Urquidi, Urquiza, Urresti, Urriola, Urrizaga, Urrutia, Ustariz,

V*

Vasquez?, Vega, Vera?,Vergara, Villanueva? Villarrea? Viscarret, Vizcarra,

X

Xavier?,

Y

Yanci, Yanchunis?, Ybarra, Ybarzabal, Ydiando, Ygoa, Ynchausti, Yraguen, Yribar, Yroz, Yrueta, Yturbe Yzaguirre,

Z

Zabala, Zaga, Zarandona, Zarate, Zataray?, Zatica, Zavala, Zelayeta, Zubieta, Zubillaga, Zugazaga

These are mostly Basque surnames. Some are non-Basque names associated with people born in the Basque Country.