Sainz

surname · Latin script

Recorded for both men and women· direction only, no split published

/sainθ/(machine-generated) pronunciation, model-generated

Sainz is a surname written in the Latin script, with more bearers in Spain than in any other country. Recorded meaning: Borrowed from Spanish Sainz, itself of Basque origin.

rarermore common
  • ESSpain1 in 4.4K(measured from records)
  • UYUruguay1 in 4.7K
  • ARArgentina1 in 24K

carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). One hue, darker where it is more common; hover a country for its figure.

Spain (measured from records)

11,484 people

2 (measured from records)

recorded for this name

Sources
260 (measured from records)

Highest-authority source

1 in 4.4K (inferred from the name graph)

Spain

measured from records inferred from the name graph

Spellings & scripts(measured from records)

SainzLatin(measured from records)
СайнсCyrillic(measured from records)

Spellings marked ● are how people bearing the name write it in our records, and ○ marks a model's transliteration; click a spelling to open its page.

Meaning & origin(measured from records)

Borrowed from Spanish Sainz, itself of Basque origin.

Sources 1

Attested across 2 languages in the etymology graph.

Where in the world(measured from records)

Sainz counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.

Sorted by bearers: national registers' counts, and Mondonomo's estimates (≈, est.) where no register counts.

Where Sainz is recorded, by country
CountryMost common spellingSources
ES Spain#34211,4841 in 4.4K11KSainz163
US United States—3,8691 in 86K3.9KSainz260
AR Argentina—1,9101 in 24K1.9KSainz69
BO Bolivia#552≈990 est.≈1 in 12K—Sainz33
UY Uruguay#7887181 in 4.7K718Sainz23
CL Chile—≈430 est.≈1 in 43K1Sainz54

11,484 people counted by INE — Padrón per-token widgets (current living counts, given + apellidos). Exact figures are national registers' own counts, while figures marked ≈ and est. are Mondonomo’s estimates, counted from our sources and calibrated against those registers; hover one for how far to trust it in that country. A dash means neither exists.

Registers cited: Census Bureau — Surname Frequency 2010; INE — Padrón per-token widgets (current living counts, given + apellidos); INE — Apellidos más frecuentes (Padrón Municipal); RENAPER — Apellidos (person counts, national); SRCEI — Nombres más comunes (guaguas, 1920–2021); INE Uruguay — Apellidos más frecuentes 1902–2024 (Tableau Public). Figures without a register are Mondonomo estimates; see Methodology.

Country figures for a list of names, at full precision, are available under licence rather than by scraping this table (how that works).

Other names spelled this way(inferred from the name graph)

Sainz is also recorded as 9 other names, grouped separately because the records behind them do not connect to the one described above.

  • French surname6 spellings in the group

    Most recorded in France, United States, Spain, Belgium

    Languages: French, Catalan

    Also written Sáinz, Saínz

  • a separate name3 spellings in the group

    Also written Sáinz, Saínz

  • Italian surname2 spellings in the group

    Most recorded in Spain, Italy, United States, Philippines

    Also written Sáinz

  • Polish surname3 spellings in the group

    Most recorded in Poland, Spain, United States

    Also written Sáinz, Saínz

  • Bulgarian surname8 spellings in the group

    Most recorded in Spain, United States

    Languages: Bulgarian, Croatian

    Also written Sáinz

  • Danish surname5 spellings in the group

    Most recorded in Spain, Denmark, United States

    Languages: Danish, Norwegian

    Also written Sáinz

  • Romanian surname2 spellings in the group

    Most recorded in Spain

    Also written Sáinz

  • Czech surname3 spellings in the group

    Most recorded in Czechia, Spain

    Languages: Czech, Slovak

    Also written Sáinz

  • Hungarian surname2 spellings in the group

    Most recorded in Hungary, Spain, United States

    Also written Sáinz

32 further groups record this spelling and are not listed here.

Grouping is the name graph's, not a register's: two spellings join a group when the evidence links them, so a group is a claim about the records rather than about the people.

Notable people with this name(measured from records)

18501900195020002050Regino Sainz de la Maza, b. 1896Rafael Sánchez Guerra, b. 1897Lolo Sainz, b. 1940Gustavo Sainz, b. 1940Tina Sainz, b. 1945Verónica Castro, b. 1952Carlos Sainz, b. 1962Antonia Sainz, b. 1992Carlos Sainz Jr., b. 1994Borja Sainz, b. 2001

The ten people covered by the most Wikipedia language editions — a proxy for cross-cultural notability, which favours historical and Western figures over equally prominent contemporary ones — shown by birth year. Source: Wikidata (CC0).

How to address them(machine-generated)

FormalEstimado/a Sainz,Dear Sainz, (English)
InformalEstimado/a Sainz,Hello, (English)

Evidence(measured from records)

Attested in 24 sources across 15 countries.

Reference works 3

These works list the name; their figures are licensed and are not reproduced here.

Register rows as of the 2026-10-09 data build.

Frequently asked questions

What does the name Sainz mean, and where does it come from?
Borrowed from Spanish Sainz, itself of Basque origin. Recorded by Wiktionary.
How do you pronounce Sainz?
A machine transcription gives /sainθ/ (IPA) for Spanish.
In which country does Sainz have the most bearers?
In Spain, the national register counted about 11 thousand people named Sainz, more than in any other country we hold, where it is most often spelled sainz.
Where is Sainz most common?
Sainz is densest in Spain, where the national register counts about 1 in 4.4 thousand people carrying it.
How common is the name Sainz?
In Spain, the national register counted 11,484 people named Sainz, about 1 in 4.4 thousand residents.
How common is Sainz compared with other names?
In Spain, Sainz is the 342nd most common surname of 395,154 surnames recorded there.

What do you want to know about Sainz?

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/sainz

The payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. It takes a free API key (1,000 requests a day), which returns what this page shows everyone; the full country table, every register citation and the year-by-year series come with a licensed key, as does bulk access.

About this data

measured from records inferred from the name graph machine-generated

These figures come from the data snapshot of and will change as it is rebuilt.

Statistics are aggregated from the Mondonomo name corpus; related names and etymology are inferred from the name graph; pronunciation and any machine-marked transliterations are model-generated. Read how the numbers are made, including their known failure modes, and where the data comes from.

Reference works we consult — surname dictionaries, official name registers, Wikidata and Wiktionary — are named directly, beside the claims they support. The per-country source counts also include datasets of person records: we publish how many there are and their authority tier, but not their names.

Cite this page Mondonomo, “Sainz” — the 342nd most common surname in Spain. Data snapshot 2026-10-10.

See how Sainz parses inside a full name →