Reiso

surname · Latin script

Recorded as a male name· opposite-gender records fall within measured source noise

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

Reiso is a surname written in the Latin script, with more bearers in Norway than in any other country.

rarermore common
  • NONorway1 in 70K(measured from records)
  • PLPoland1 in 13M

carrying the name, as counted by each country's national register. One hue, darker where it is more common; hover a country for its figure.

Norway (measured from records)

78 people

Sources
12 (measured from records)

Highest-authority source

1 in 70K (inferred from the name graph)

Norway

measured from records inferred from the name graph

Name dossier (print, CSV)

Meaning & origin

No verified etymology recorded for this name yet — the entries below are drawn from usage statistics and the name graph.

Where in the world(measured from records)

Reiso 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 Reiso is recorded, by country
CountryMost common spellingSources
NO Norway781 in 70K78Reiso7
PL Poland31 in 13M3——
US United States———Reiso12
GB United Kingdom———Reiso3
ZA South Africa———Reiso1
AU Australia———Reiso1

78 people counted by SSB — Navnesøk (name-search service, living population). 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: SSB — Navnesøk (name-search service, living population); dane.gov.pl — PESEL living persons (surnames). 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)

Reiso is also recorded as another name, grouped separately because the records behind them do not connect to the one described above.

  • Finnish surname3 spellings in the group

    Most recorded in Norway

    Also written Reisö

20 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.

How to address them(machine-generated)

FormalDear Mr Reiso,
InformalHi Reiso,

Evidence(measured from records)

Attested in 7 sources across 4 countries.

Official registers attesting Reiso
CountryRegisterYearCountRank
NO NorwaySSB — Navnesøk (name-search service, living population)—78#19,056
PL Polanddane.gov.pl — PESEL living persons (surnames)20263—
PL Polanddane.gov.pl — PESEL living persons (names)—3#285,758

Reference works 2

  • Nişanyan Adlar (Turkish given-name national-registry frequency)
  • Ethiopian name tokens (GitHub lehagere/ethiopian-names, 40/60 condominium list)

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

How do you pronounce Reiso?
A machine transcription gives /ɹɛɪsoʊ/ (IPA) for English.
In which country does Reiso have the most bearers?
In Norway, the national register counted about 78 people named Reiso, more than in any other country we hold, where it is most often spelled reiso.
Where is Reiso most common?
Reiso is densest in Norway, where the national register counts about 1 in 70 thousand people carrying it.
How common is the name Reiso?
In Norway, the national register counted 78 people named Reiso, about 1 in 70 thousand residents.

What do you want to know about Reiso?

Nobody replies to these one by one, but what readers ask decides what these pages answer next.

Please leave out anyone's personal details (see Privacy).

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

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, “Reiso”. Data snapshot 2026-10-10.

See how Reiso parses inside a full name →