Läch
surname · Latin script
Läch is a surname written in the Latin script, with more bearers in Poland than in any other country. Recorded meaning: Borrowed from Old Ruthenian лѧхъ (ljax), from Old East Slavic лѧхъ (lęxŭ), from Proto-Slavic *lęxъ, from earlier Proto-Slavic *lędxъ, hypocorism of Proto-Slavic *lęděninъ, from Proto-Slavic *lędo (“fa.
- PLPoland1 in 3.7K(measured from records)
- SKSlovakia1 in 29K
- CZCzechia1 in 54K
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)
- Record sources
- 275 (measured from records)
- 1 in 3.7K (inferred from the name graph)
10,388 people, 2026
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Poland
measured from records inferred from the name graph
Spellings & scripts
(measured from records)One other spelling is counted as the same name:
Locally spelled Lach in US United States, PL Poland.
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)- Old Ruthenianлѧхъljax(measured from records)
- Old East Slavicлѧхъlęxŭ(measured from records)
- Proto-Slavic*lęxъ(measured from records)
- Proto-Slavic*lędo“fallow“fallow, uncultivated field”(measured from records)
Borrowed from Old Ruthenian лѧхъ (ljax), from Old East Slavic лѧхъ (lęxŭ), from Proto-Slavic *lęxъ, from earlier Proto-Slavic *lędxъ, hypocorism of Proto-Slavic *lęděninъ, from Proto-Slavic *lędo (“fallow, uncultivated field”) + Proto-Slavic *-ěninъ. Originally, the word referred to the Lendians tribe (cf. Old Polish Lędzanie), then passed to the Poles. Alleged relation with Lech unclear.
Cited for this meaning 2
- Dictionary of American Family Names
- Wiktionary
Attested across 16 languages in the etymology graph.
Where in the world
(measured from records)Läch 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.
10,388 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: Census Bureau — Surname Frequency 2010; dane.gov.pl — PESEL living persons (surnames); IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); MVČR — living population register 2017; JÚĽŠ SAV — Databáza priezvisk na Slovensku (surname database, 1995 census); SSB — Navnesøk (name-search service, living population); DZS — Imena i prezimena (per-token lookup form). 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).
Evidence
(measured from records)No register attests this spelling yet
Frequently asked questions
- What does the name Läch mean, and where does it come from?
- Borrowed from Old Ruthenian лѧхъ (ljax), from Old East Slavic лѧхъ (lęxŭ), from Proto-Slavic *lęxъ, from earlier Proto-Slavic *lędxъ, hypocorism of Proto-Slavic *lęděninъ, from Proto-Slavic *lędo (“fa… Recorded by Dictionary of American Family Names and Wiktionary.
- In which country does Läch have the most bearers?
- In Poland, the national register counted about 10 thousand people named Läch, more than in any other country we hold, where it is most often spelled lach.
- Where is Läch most common?
- Läch is densest in Poland, where the national register counts about 1 in 3.7 thousand people carrying it.
- How common is the name Läch?
- In Poland, the national register counted 10,388 people named Läch in 2026, about 1 in 3.7 thousand residents.
What do you want to know about Läch?
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/l%C3%A4chThe 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, “Läch”. Data snapshot 2026-10-13.