Jonaitis
surname · Latin script
Meaning: from the personal name Jonas, Lithuanian form of Johannes (see John)
(measured from records)Officially recorded in 12 countries · latest register: Census Bureau, 2020
/jonɐjtʲɪs/(machine-generated) Lithuanian · model-generated
Jonaitis is a surname written in the Latin script, with more bearers in Lithuania than in any other country.
- NONorway1 in 76K(measured from records)
- DKDenmark1 in 367K
- FIFinland1 in 398K
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). Countries with no figure are shown too: flat where a national register lists the name without counting it, hatched where only our records hold it. One hue, darker where it is more common; hover a country for its figure.
- Lithuania (inferred from the name graph)
- Record sources
- 123 (measured from records)
- ≈1 in 1.6K (inferred from the name graph)
≈1,900 people, est.
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Lithuania, est.
measured from records inferred from the name graph
Meaning & origin
(measured from records)from the personal name Jonas, Lithuanian form of Johannes (see John).
Cited for this meaning 1
- Dictionary of American Family Names
Where the surname Jonaitis is found
(measured from records)Jonaitis 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.
| Country | Most common spelling | Sources | |||
|---|---|---|---|---|---|
| LT Lithuania | ≈1,900 est. | ≈1 in 1.6K | — | Jonaitis | 4 |
| US United States | 309 | 1 in 1.1M | 318 | Jonaitis | 123 |
| GB United Kingdom | ≈100 est. | ≈1 in 663K | — | Jonaitis | 21 |
| NO Norway | 72 | 1 in 76K | 72 | — | 1 |
| DE Germany | ≈63 est. | ≈1 in 1.3M | — | Jonaitis | 24 |
| LR Liberia | ≈25 est. | ≈1 in 224K | — | Jonaitis | 1 |
| DK Denmark | 16 | 1 in 367K | 16 | — | — |
| FI Finland | 14 | 1 in 398K | 14 | — | 1 |
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; Census Bureau — Surname Frequency 2000; SSB — Navnesøk (name-search service, living population); Danmarks Statistik — Hvor mange hedder...? (living-population name counts); DVV — Nimipalvelu (Finnish name service, per-name lookup). 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 recorded senses
(measured from records)Jonaitis 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.
— žr. Jonas. JÓNAKAITIS Graž —žr. Janakas
as a nameLietuvių pavardžių žodynas (Dictionary of Lithuanian Surnames)
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.
Notable people with this name
(measured from records)- Henrikas Jonaitisb. 1913LTLithuanian physicist
- Aldona Jonaitisb. 1948USAmerican writer
- Ly Jonaitisb. 1985VEVenezuelan model
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)Evidence
(measured from records)21 registers and reference works attest this spelling, across 12 countries.
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- What does the name Jonaitis mean, and where does it come from?
- from the personal name Jonas, Lithuanian form of Johannes (see John). Recorded by Dictionary of American Family Names.
- How do you pronounce Jonaitis?
- In Lithuanian /jonɐjtʲɪs/. Transcriptions are machine-generated except where a dictionary is named.
- Which countries have the most people with the surname Jonaitis?
- Mondonomo estimates about 1.9 thousand people named Jonaitis in Lithuania, more than in any other country we hold, where it is most often spelled jonaitis. After it come United States, United Kingdom, Norway and Germany; the country table on this page ranks them.
- How common is the name Jonaitis?
- In the United States, the national register counted 309 people named Jonaitis in 2010, about 1 in 1.1 million residents.
What do you want to know about Jonaitis?
Nobody replies to these one by one, but what readers ask decides what these pages answer next.
Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/jonaitisThe 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, “Jonaitis”. Data snapshot 2026-10-13.