Lucius
given name · Latin script
Meaning: A classic Roman name, Lucius means "light" and is associated with a kinsman of the Apostle Paul in the New Testament
Recorded as a male name· opposite-gender records fall within measured source noise
/ˈɫuʃəs/(machine-generated) pronunciation, model-generated
Lucius is a given name written in the Latin script, with more bearers in the United States than in any other country.
- USUnited States1 in 82K(measured from records)
- NLNetherlands1 in 28K
- SESweden1 in 124K
carrying the name, as counted by each country's national register. One hue, darker where it is more common; hover a country for its figure.
- United States (measured from records)
- Sources
- 59 (measured from records)
- 1 in 28K (inferred from the name graph)
4,036 people, 2020
Highest-authority source
Netherlands
measured from records inferred from the name graph
Meaning & origin(measured from records)
A classic Roman name, Lucius means "light" and is associated with a kinsman of the Apostle Paul in the New Testament.
Sources 1
- Biblical Names Compiled Database
Attested across 17 languages in the etymology graph.
Where in the world(measured from records)
Lucius 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 | |||
|---|---|---|---|---|---|
| US United States | 4,036 | 1 in 82K | 4K | Lucius | 59 |
| NL Netherlands | 628 | 1 in 28K | 628 | — | 3 |
| BR Brazil | 421 | 1 in 503K | 421 | Lucius | 58 |
| SE Sweden | 82 | 1 in 124K | 82 | — | — |
| FI Finland | 31 | 1 in 180K | 44 | — | 1 |
| DK Denmark | 15 | 1 in 391K | 15 | — | — |
4,036 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); Meertens NVB — Nederlandse Voornamenbank (all-time BRP bearer counts, 2018); Skatteverket — Sök hur många som har ett visst namn (living population); DVV — Etunimitilasto (Finnish given names register); DVV — Nimipalvelu (Finnish name service, per-name lookup); Danmarks Statistik — Hvor mange hedder...? (living-population name counts). 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 recorded senses(measured from records)
Lucius is also recorded in 5 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
The name Lucius is a Roman praenomen of Latin origin, derived from 'lux', meaning 'light'.
as a nameBiblical Names Compiled Database
The name Lucius is of Latin origin, derived from the word 'lux', meaning 'light'.
as a nameBiblical Names Compiled Database
In English, From Latin lux, ‘light’; used in Ireland as an anglicisation of Lachtna and Laoiseach.
as a nameIrish first names
In Latin, Roman praenomen; likely from Latin lux 'light'
as a nameDeutsche Namenkunde: Unsere Familiennamen nach ihrer Entstehung und Bedeutung
In German, Latinized surname in -ius; demonstrates learned classicizing name forms.
as a nameDeutscher Familiennamenatlas, Band 3: Morphologie der Familiennamen
Ordered by how much of this spelling's record each language holds, so a sense from a language the name is barely used in sits last rather than first.
Notable people with this name(measured from records)
- Lucius Ib. 200ITPope and bishop of Rome from 253 to 254
- Lucius IIb. 1050ITpope of the Catholic Church from 1144 to 1145
- Lucius IIIb. 1110ITpope of the Catholic Church from 1181 to 1185 (1110–1185)
- Lucius Robinsonb. 1810USAmerican politician (1810-1891)
- Lucius Quintus Cincinnatus Lamar IIb. 1825USAmerican lawyer, politician and judge (1825-1893)
- Lucius Frederick Hubbardb. 1836USAmerican politician (1836-1913)
- Rube Goldbergb. 1883USnot in their usual nameAmerican cartoonist (1883–1970)
- Lucius D. Clayb. 1897USUnited States general (1897–1978)
- Lucius Shepardb. 1947USAmerican writer (1943–2014)
- Lucius Hoyosb. 2001USAmerican actor
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)
A formal English salutation is built on the surname, so it needs a full name — on its own, a first name only supports the informal form.
Evidence(measured from records)
Attested in 68 sources across 33 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — First Name Frequency 2020 by sex | 2020 | 4K | #4,561 |
| NL Netherlands | Meertens NVB — Nederlandse Voornamenbank (all-time BRP bearer counts, 2018) | — | 628 | #1,415 |
| BR Brazil | IBGE — names by decade (Kaggle mirror) | 2022 | 421 | — |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | — | 420 | #15,051 |
| BR Brazil | IBGE — Nomes (census name API) | — | 232 | #23,202 |
| NL Netherlands | Meertens NVB — Nederlandse Voornamenbank (live per-name BRP counts, 1790-2017) | — | 224 | #5,106 |
| US United States | SSA — National Baby Names (1880–present) | 2025 | 189 | — |
| SE Sweden | Skatteverket — Sök hur många som har ett visst namn (living population) | — | 82 | #9,780 |
| FI Finland | DVV — Nimipalvelu (Finnish name service, per-name lookup) | — | 44 | #6,773 |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | 2020 | 43 | — |
| FI Finland | DVV — Etunimitilasto (Finnish given names register) | — | 31 | — |
| SE Sweden | SCB — Namnstatistik (to 2023) | 2020 | 29 | — |
Reference works 6
- Dictionary of American Family Names
- Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
- Wikipedia given-name tokens
- Wikipedia surname tokens
- Wikidata name items (native-script + romanized given/family names)
- Rymut, Słownik nazwisk współcześnie w Polsce używanych (10 vols, IJP PAN, Kraków 1992–1994) — every Polish surname in the PESEL register at the end of 1990, with bearer counts nationally and per voivodeship1990
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 Lucius mean, and where does it come from?
- A classic Roman name, Lucius means "light" and is associated with a kinsman of the Apostle Paul in the New Testament. Recorded by Biblical Names Compiled Database.
- Is Lucius a male or female name?
- Lucius 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.
- How do you pronounce Lucius?
- A machine transcription gives /ˈɫuʃəs/ (IPA) for English.
- What are other forms of the name Lucius?
- In the etymology graph, Lucio, Lucian and Lúcio are forms of the same name in other languages.
- In which country does Lucius have the most bearers?
- In the United States, the national register counted about 4.0 thousand people named Lucius, more than in any other country we hold, where it is most often spelled lucius.
- Where is Lucius most common?
- Measured as a share of residents rather than as a count, Lucius is densest in the Netherlands — about 1 in 28 thousand people — even though United States holds more of our records for it.
- How common is the name Lucius?
- In the United States, the national register counted 4,036 people named Lucius in 2020, about 1 in 82 thousand residents.
What do you want to know about Lucius?
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/luciusThe 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, “Lucius”. Data snapshot 2026-10-10.