Petaja
surname · Latin script
Recorded for both men and women· direction only, no split published
/pitəjə/(machine-generated) pronunciation, model-generated
Petaja is a surname written in the Latin script, with more bearers in Finland than in any other country.
- FIFinland1 in 4.4K(measured from records)
- SESweden1 in 444K
- CHSwitzerland1 in 2.1M
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.
- Finland (measured from records)
- Sources
- 15 (measured from records)
- 1 in 4.4K (inferred from the name graph)
1,277 people
Highest-authority source
Finland
measured from records inferred from the name graph
Spellings & scripts(measured from records)
One other spelling is counted as the same name:
Locally spelled Petäjä in FI Finland, SE Sweden.
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.
Attested across 13 languages in the etymology graph.
Where in the world(measured from records)
Petaja 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 | |||
|---|---|---|---|---|---|
| FI Finland | 1,277 | 1 in 4.4K | 1.3K | Petäjä | 15 |
| US United States | ≈140 est. | ≈1 in 2.3M | listed | Petaja | 11 |
| SE Sweden | 23 | 1 in 444K | 23 | Petäjä | 5 |
| PL Poland | 6 | 1 in 6.4M | 4 | — | — |
| CH Switzerland | 4 | 1 in 2.1M | 4 | — | — |
1,277 people counted by DVV — Nimipalvelu (Finnish name service, per-name lookup). 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: DVV — Nimipalvelu (Finnish name service, per-name lookup); Skatteverket — Sök hur många som har ett visst namn (living population); the us-wru-surnames-voterfile register; BFS — Familiennamen der Wohnbevölkerung (surnames); 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).
Notable people with this name(measured from records)
- Liidia Petajab. 1938EEEstonian engineer (born 1938)
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)
Attested in 5 sources across 4 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| FI Finland | DVV — Nimipalvelu (Finnish name service, per-name lookup) | — | 30 | #37,356 |
| CH Switzerland | BFS — Familiennamen der Wohnbevölkerung (surnames) | 2024 | 4 | #118,617 |
| US United States | wru Name Dictionary — US surnames, voter-file supplement (Khanna et al.) | — | — | — |
Reference works 1
- Wikidata name items (native-script + romanized given/family names)
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 Petaja?
- A machine transcription gives /pitəjə/ (IPA) for English.
- In which country does Petaja have the most bearers?
- In Finland, the national register counted about 1.3 thousand people named Petaja, more than in any other country we hold, where it is most often spelled petäjä.
- Where is Petaja most common?
- Petaja is densest in Finland, where the national register counts about 1 in 4.4 thousand people carrying it.
- How common is the name Petaja?
- In Finland, the national register counted 1,277 people named Petaja, about 1 in 4.4 thousand residents.
What do you want to know about Petaja?
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/petajaThe 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, “Petaja”. Data snapshot 2026-10-10.