Viliam

given name · Latin script

Recorded as a male name· opposite-gender records fall within measured source noise

Viliam is a given name written in the Latin script, with more bearers in the United States than in any other country. In Czechia it is the 55th most common given name. Recorded meaning: Derived from English William.

rarermore common
  • SKSlovakia≈1 in 2.1K(inferred from the name graph)
  • CZCzechia≈1 in 14K
  • USUnited States1 in 148as William

carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). Where a country counts another spelling of the name rather than Viliam itself, the figure is that spelling’s, and it is named. One hue, darker where it is more common; hover a country for its figure.

United States (measured from records)

2,240,114 named William, 2020

3 (measured from records)

recorded for this name

Sources
162 (measured from records)

Highest-authority source

≈1 in 2.1K (inferred from the name graph)

Slovakia, est.

measured from records inferred from the name graph

Name dossier (print, CSV)

Spellings & scripts(measured from records)

WilliamLatin(measured from records)
ВильямCyrillic(measured from records)
ვილიამGeorgian(measured from records)

3 other spellings are counted as the same name:

Locally spelled William in US United States, SE Sweden, CZ Czechia and 2 more.

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)

Derived from English William.

Sources 2

Attested across 13 languages in the etymology graph.

Where in the world(measured from records)

Viliam 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 Viliam is recorded, by country
CountryMost common spellingSources
US United States—2,240,114as William1 in 1482.2MWilliam162
BR Brazil—95,539as William1 in 2.2K96K—1
SE Sweden—52,098as William1 in 19652KWilliam14
EC Ecuador—33,455as William1 in 50533K—6
DK Denmark—15,675as William1 in 37416K——
CR Costa Rica—12,495as William1 in 40812K——
SK Slovakia#79≈2,500 est.≈1 in 2.1K—William46
CZ Czechia#55≈780 est.≈1 in 14K1.3KWilliam77
HR Croatia—971 in 44K104William44

2,240,114 people counted by Census Bureau — First Name Frequency 2020 by sex, 2020. 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 — First Name Frequency 2020 by sex; IBGE — names by decade (Kaggle mirror); Skatteverket — Sök hur många som har ett visst namn (living population); INEC — civil registry names; naše jména — 2016 MVČR snapshot; Danmarks Statistik — Hvor mange hedder...? (living-population name counts); TSE — electoral roll (padrón) names; DZS — Imena i prezimena (per-token lookup form); DZS — Učestalost osobnih imena (Popis 2021). 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)

Viliam is also recorded as 3 other names, grouped separately because the records behind them do not connect to the one described above.

  • Slovak given name3 spellings in the group

    Most recorded in Slovakia, United States, United Kingdom, India

    Also written Viliám

  • Portuguese given name3 spellings in the group

    Most recorded in Brazil, United States, Colombia, Peru

    Languages: Portuguese, Spanish

    Also written Víliam

  • Croatian given name6 spellings in the group

    Most recorded in Croatia, Bulgaria

    Languages: Croatian, Bulgarian

    Also written Вилиам

48 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)

18001850190019502000Viliam Pauliny-Tóth, b. 1826Viliam Figuš-Bystrý, b. 1875Viliam Široký, b. 1902Viliam Karmažin, b. 1922Viliam Schrojf, b. 1931Viliam Fischer, b. 1938Viliam Veteška, b. 1953Viliam Judák, b. 1957Viliam Klimáček, b. 1958Viliam Hýravý, b. 1962

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).

Evidence(measured from records)

Attested in 32 sources across 19 countries.

Reference works 2

  • Wikipedia given-name tokens
  • 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

What does the name Viliam mean, and where does it come from?
Derived from English William. Recorded by Wiktionary and Nordic Names.
Is Viliam a male or female name?
Viliam is a male name in our records. Opposite-gender entries fall within the cross-gender noise we measure in the source data, so we don't report them as usage.
What are other forms of the name Viliam?
In the etymology graph, William, Guillermo and Willie are forms of the same name in other languages.
In which country does Viliam have the most bearers?
In the United States, the national register counted about 2.2 million people named William, more than in any other country we hold.
How common is the name Viliam?
In Croatia, the national register counted 97 people named Viliam in 2021, about 1 in 44 thousand residents.
How common is Viliam compared with other names?
In Czechia, Viliam is the 55th most common given name of 16,679 given names recorded there.

What do you want to know about Viliam?

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Query this name via API
curl https://api.mondonomo.ai/api/v1/name-graph/viliam

The same payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. Rate-limited for casual use; a free API key gives 1,000 requests a day, and bulk access is licensed separately.

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, “Viliam” — the 55th most common given name in Czechia. Data snapshot 2026-10-10.

See how Viliam parses inside a full name →