This list includes 30 Spanish last names that start with I, from “Ibarra” to “Iñiguez”. Many reflect regional roots (for example Basque origins) and patronymic forms, useful for genealogy, character naming, and research.

Spanish last names that start with I are family names used across Spanish-speaking countries that begin with the letter “I”. They often show regional languages or ancestor-based forms, as seen in “Ibarra” and “Iñiguez”.

Below you’ll find the table with Surname, Meaning, and Notable people.

Surname: The family name as written, which you can use to search records or organize lists.

Meaning: A brief one-line origin or translation helping you understand cultural or linguistic roots.

Notable people: One or two examples of people with this surname, giving you quick historical or cultural context.

Spanish last names that start with I

SurnameMeaningOrigin/RegionNotable person(s)
IbarravalleyBasque/SpainJoaquín Ibarra (1725–1785 — Spanish typographer)
Ibáñezson of Iván/IbánSpain/Latin AmericaFrancisco Ibáñez (1936–2023 — Spanish cartoonist); Carlos Ibáñez del Campo (1877–1960 — Chilean president)
IglesiaschurchesSpain/Latin AmericaJulio Iglesias (1943 — Spanish singer); Enrique Iglesias (1975 — Spanish singer)
IglesiachurchSpain/Latin America
Iñiguezson of ÍñigoSpain
Izquierdoleft; left-handedSpain/Latin AmericaJosé Izquierdo (1992 — Colombian footballer)
Induráinoak groveBasque/SpainMiguel Induráin (1964 — Spanish cyclist)
Iturbidetown fordBasque/MexicoAgustín de Iturbide (1783–1824 — Mexican emperor)
Infantechild/princeSpain/Latin AmericaPedro Infante (1917–1957 — Mexican actor/singer)
Iriartebetween townsBasque/SpainTomás de Iriarte (1750–1791 — Spanish poet)
Irigoyenhigh fordBasque/ArgentinaMartín Irigoyen (1977 — Argentine musician)
IrigarayBasque toponymBasque/Spain/FranceLuce Irigaray (1930 — Belgian philosopher)
IrizarBasque toponymBasque/Spain
IrizarryBasque toponym (Puerto Rican variant)Puerto Rico/Latin AmericaRafael Irizarry (1963 — Puerto Rican biostatistician)
Iribarrenlower slopeBasque/Spain/Latin America
Iturriaganear springsBasque/Spain/Latin America
Iturbenear the springBasque/Latin America
Ibarretxevalley houseBasque/SpainJuan José Ibarretxe (1957 — Basque politician)
Izagirregrove/fern plain (Basque)Basque/SpainAnder Izagirre (1977 — Basque journalist)
Iraizozplace of springBasque/SpainGorka Iraizoz (1981 — Spanish footballer)
IrujoBasque toponymBasque/Spain
InchaustiBasque toponymBasque/Argentina
InchauspeBasque toponymBasque/Argentina
Irazábalpromontory/ford (Basque)Uruguay/SpainDarío Irazábal (1982 — Uruguayan footballer)
IslasislandsSpain/Latin America
IslaislandSpain/Latin America
IzcoBasque toponymBasque/Spain
IzaBasque place-nameBasque/Spain
Iniestafrom Iniesta (town)Castile-La Mancha/SpainAndrés Iniesta (1984 — Spanish footballer)
IcetaCatalan surname (toponymic/patronymic)Catalonia/SpainMiquel Iceta (1960 — Spanish politician)

Descriptions

Ibarra
Common Basque surname meaning “valley.” Widespread in Spain and Latin America; variants include Ybarra.
Ibáñez
Very common patronymic surname with many bearers across politics, arts and sports.
Iglesias
Plural of “iglesia.” Widely found in Spain and Latin America; associated with famous entertainers.
Iglesia
Singular form used as a surname and in compounds like “de la Iglesia.” Less frequent than Iglesias.
Iñiguez
Patronymic from the given name Íñigo. Found in Navarra and Basque-influenced regions; variants include Iñíguez and Iniguez.
Izquierdo
Originally a nickname for a left-handed person; common in Spain and former colonies.
Induráin
Basque toponymic surname; internationally known thanks to cyclist Miguel Induráin.
Iturbide
Basque-origin surname notable in Mexican history; Iturbide led independence and briefly became emperor.
Infante
Originally a royal title turned surname; widespread in Iberia and Latin America, linked to a famed Mexican star.
Iriarte
Basque toponymic surname with literary ties; present across Spanish-speaking countries.
Irigoyen
Basque-origin surname common in Argentina and Uruguay; spelling variants include Irigoyen and Yrigoyen.
Irigaray
Basque surname used internationally; associated with the prominent philosopher Luce Irigaray.
Irizar
Basque surname derived from local place-names; found in northern Spain and diaspora communities.
Irizarry
Basque-derived surname common in Puerto Rico and the Caribbean; variant of Irizar.
Iribarren
Toponymic Basque surname present in Spain, Argentina and other Spanish-speaking regions.
Iturriaga
Basque toponymic surname; seen in Spain and among Latin American families of Basque descent.
Iturbe
Short Basque toponym found in Spain and Latin America, notably Argentina and Paraguay.
Ibarretxe
Distinct Basque surname known from regional politics and the Basque Country.
Izagirre
Basque surname with variants Izaguirre/Izagirre; common in Euskadi and among the diaspora.
Iraizoz
Basque surname borne by notable athletes; originally a local place-name.
Irujo
Historic Basque surname found in Spanish archives and in Latin American immigration records.
Inchausti
Less common Basque surname seen in Spain and Argentina; reflects Basque inland origins.
Inchauspe
Variant Basque surname present in Argentina and Chile; typical of Basque immigration patterns.
Irazábal
Basque-origin surname common in the Río de la Plata region; appears with and without accent.
Islas
Plural of “isla” used as a surname; toponymic or descriptive origin, found in Spanish-speaking countries.
Isla
Singular form of “isla” used as a surname; less frequent than Islas but attested.
Izco
Short Basque surname found regionally; lower frequency but historically attested.
Iza
Simple Basque toponym used as both place-name and family name in Navarra and nearby areas.
Iniesta
Castilian toponymic surname made famous by Andrés Iniesta; found in Spain and Latin America.
Iceta
Catalan-origin surname used in Spain’s political life; exact etymology uncertain but regionally established.
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