Kostian
surname · Latin script
(measured from records)Officially recorded in 6 countries · latest register: dane.gov.pl, 2026
/ˈkostiɑn/(recorded in a dictionary) Finnish · from Wiktionary
Kostian is a surname written in the Latin script, with more bearers in Finland than in any other country. Recorded meaning: A diminutive of Konstantin.
- FIFinland1 in 23K(measured from records)
- PLPoland1 in 510K
- SESweden1 in 729K
carrying the name, as counted by each country's national register. 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.
- Finland (measured from records)
- 2 (measured from records)
- Record sources
- 5 (measured from records)
- 1 in 23K (inferred from the name graph)
246 people
recorded for this name
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Finland
measured from records inferred from the name graph
Spellings & scripts
(measured from records)Locally spelled Костиан in FI Finland, RU Russia.
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)A diminutive of Konstantin.
Cited for this meaning 2
Attested in 1 language in the etymology graph.
Where in the world
(measured from records)Kostian 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.
246 people counted by DVV — Nimipalvelu (Finnish name service, per-name lookup), counting the spelling kostian. 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); dane.gov.pl — PESEL living persons (surnames); Skatteverket — Sök hur många som har ett visst namn (living population). 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)- Toni KostianFIFinnish chef and restaurateur, Chef of the Year 2016 (Finland)
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)13 registers and reference works attest this spelling, across 6 countries.
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- What does the name Kostian mean, and where does it come from?
- A diminutive of Konstantin. Recorded by Wiktionary and Nordic Names.
- How do you pronounce Kostian?
- In Finnish /ˈkostiɑn/ (Wiktionary).
- In which country does Kostian have the most bearers?
- In Finland, the national register counted about 246 people named Kostian, more than in any other country we hold, where it is most often spelled костиан.
- Where is Kostian most common?
- Kostian is densest in Finland, where the national register counts about 1 in 23 thousand people carrying it.
- How common is the name Kostian?
- In Finland, the national register counted 246 people named Kostian, about 1 in 23 thousand residents.
What do you want to know about Kostian?
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/kostianThe 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, “Kostian”. Data snapshot 2026-10-13.