Kosiba

surname · Latin script

Meaning: possibly a metonymic occupational name for a reaper, from Polish kosa ‘scythe’ (Dictionary of American Family Names)

(measured from records)Officially recorded in 8 countries · latest register: dane.gov.pl, 2026

/kɔˈɕi.ba/(recorded in a dictionary) Polish · from Wiktionary

Say it inExplore pronunciation →

Kosiba is a surname written in the Latin script, with more bearers in Poland than in any other country: 2,369 people, counted by dane.gov.pl in 2026.

  • PLPoland1 in 16K(measured from records)
  • USUnited States1 in 470K
  • SESweden1 in 1M

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.

Poland (measured from records)

2,369 people, 2026

Record sources
62 (measured from records)

corpus datasets behind its best-documented spelling

strongest: highest-authority source

1 in 16K (inferred from the name graph)

Poland

measured from records inferred from the name graph

Name dossier (print, CSV)Make your nomograph ✦

How to pronounce Kosiba

  • Polish:/kɔˈɕi.ba/(recorded in a dictionary) from Wiktionary
  • Swahili:/kosiɓa/(machine-generated) model-generated

Readings marked model-generated were transcribed by a model; the others are quoted from the dictionary named.

Meaning & origin

(measured from records)

possibly a metonymic occupational name for a reaper, from Polish kosa ‘scythe’.

Cited for this meaning 1

  • Dictionary of American Family Names

Attested across 4 languages in the etymology graph.

Where the surname Kosiba is found

(measured from records)

Kosiba 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 Kosiba is recorded, by country
CountryMost common spellingSources
PL Poland2,3691 in 16K1.2KKosiba62
US United States7071 in 470K720Kosiba43
BR Brazil1781 in 1.2M178——
GB United Kingdom≈150 est.≈1 in 455K—Kosiba23
CA Canada≈110 est.≈1 in 394K—Kosiba5
SK Slovakia≈60 est.≈1 in 91K—Kosiba14

2,369 people counted by dane.gov.pl — PESEL living persons (surnames), 2026. 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 (surnames); Census Bureau — Surname Frequency 2010; Census Bureau — Surname Frequency 2000; IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname). 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)

Kosiba is also recorded as 2 other names, grouped separately because the records behind them do not connect to the one described above.

  • French surname2 spellings in the group

    Most recorded in France, United States

    Also written Kośiba

  • Croatian surname3 spellings in the group

    Most recorded in United States

    Also written Košiba

32 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.

Notable people with this name

(measured from records)
19201940196019802000Masatoshi Koshiba, b. 1926Daishi Koshiba, b. 1983Shōta Koshiba, b. 1984
  • Masatoshi Koshibab. 1926JPnot in their usual nameJapanese physicist and astronomer (1926-2020)
  • Daishi Koshibab. 1983JPnot in their usual nameJapanese seiyū
  • Shōta Koshibab. 1984JPnot in their usual nameassociation football player

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)
FormalDear Kosiba,
InformalHello,

Evidence

(measured from records)

17 registers and reference works attest this spelling, across 8 countries.

Register rows as of the 2026-10-09 data build.

Frequently asked questions

What does the name Kosiba mean, and where does it come from?
possibly a metonymic occupational name for a reaper, from Polish kosa ‘scythe’. Recorded by Dictionary of American Family Names.
How do you pronounce Kosiba?
It depends on the language: in Polish /kɔˈɕi.ba/ (Wiktionary); in Swahili /kosiɓa/. Transcriptions are machine-generated except where a dictionary is named.
Which countries have the most people with the surname Kosiba?
In Poland, the national register counted about 2.4 thousand people named Kosiba, more than in any other country we hold, where it is most often spelled kosiba. After it come United States, Brazil, United Kingdom and Canada; the country table on this page ranks them.
Where is Kosiba most common?
Kosiba is densest in Poland, where the national register counts about 1 in 16 thousand people carrying it.
How common is the name Kosiba?
In Poland, the national register counted 2,369 people named Kosiba in 2026, about 1 in 16 thousand residents.

What do you want to know about Kosiba?

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/kosiba

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, “Kosiba” — ranked 2499th in Poland (dane.gov.pl, 2026). Data snapshot 2026-10-13.

See how Kosiba parses inside a full name →