On-On

surname · Latin script

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

On-On is a surname written in the Latin script, with more bearers in Thailand than in any other country.

rarermore common
  • THThailand≈1 in 2.1M(inferred from the name graph)

carrying the name, as Mondonomo estimates it from our sources: no national register counts it in these countries. One hue, darker where it is more common; hover a country for its figure.

Thailand (inferred from the name graph)

≈33 people, est.

Sources
17 (measured from records)

Highest-authority source

≈1 in 2.1M (inferred from the name graph)

Thailand, est.

measured from records inferred from the name graph

Name dossier (print, CSV)

Spellings & scripts(measured from records)

One other spelling is counted as the same name:

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

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

Sources 1

  • Trask, Etymological Dictionary of Basque (2008 posthumous draft)

Where in the world(measured from records)

On-On 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 On-On is recorded, by country
CountryMost common spellingSources
TH Thailand≈33 est.≈1 in 2.1M—On-On13
PL Poland——5——
GB United Kingdom——5—2

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: dane.gov.pl — PESEL living persons (names); Surnames of England and Wales (taliesin-arlein.net, Sept 2002 electoral register). 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)

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

  • English surname5 spellings in the group

    Most recorded in Philippines, United States, Nigeria, United Kingdom

    Languages: English, German

    Also written OnOn, O'Non

3 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.

Other recorded senses(measured from records)

On-On is also recorded in one other lexicon, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.

  • In Basque, bonbon, sweet

    as a wordTrask, Etymological Dictionary of Basque (2008 posthumous draft)

Ordered by how much of this spelling's record each language holds, so a sense from a language the name is barely used in sits last rather than first.

Evidence(measured from records)

No register attests this spelling yet

None of the official registers or reference works in our corpus lists On-On under this spelling. The statistics on this page rest on person records, and the related names are inferred from the name graph.

Frequently asked questions

In which country does On-On have the most bearers?
Mondonomo estimates about 33 people named On-On in Thailand, more than in any other country we hold, where it is most often spelled on-on.
How common is the name On-On?
Mondonomo estimates about 33 people in Thailand have On-On as their first surname, about 1 in 2.1 million residents. No national register counts it there; the figure is ours, calibrated against the registers that do.

What do you want to know about On-On?

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/on-on

The same 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), and bulk access is licensed separately.

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, “On-On”. Data snapshot 2026-10-10.

See how On-On parses inside a full name →