Lõo

surname · Latin script

Lõo is a surname written in the Latin script, with more bearers in the United States than in any other country. Recorded meaning: From English Loo, from Hokkien 呂／吕 (Lū). Doublet of Lu, Lou, Luy, and Lew.

rarermore common
  • GYGuyana1 in 15K(measured from records)
  • EEEstonia≈1 in 35K
  • FIFinland1 in 37K

carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). One hue, darker where it is more common; hover a country for its figure.

United States (measured from records)

3,645 people, 2010

Sources
39 (measured from records)

Highest-authority source

1 in 15K (inferred from the name graph)

Guyana

measured from records inferred from the name graph

Name dossier (print, CSV)

Spellings & scripts(measured from records)

One other spelling is counted as the same name:

Locally spelled Loo in US United States, NL Netherlands, SE Sweden 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)

Derivation of Lõo: each step is the form the one above it came from.
Lõo
  1. EnglishLoo(measured from records)
  2. Hokkien呂／吕Lū(measured from records)

From English Loo, from Hokkien 呂／吕 (Lū). Doublet of Lu, Lou, Luy, and Lew.

Sources 4

  • A dictionary of surnames
  • Dictionary of American Family Names
  • The Oxford Names Companion - The definitive guide to Surnames, First Names, and Place Names of the British Isles
  • Wiktionary

Attested across 20 languages in the etymology graph.

Where in the world(measured from records)

Lõo 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 Lõo is recorded, by country
CountryMost common spellingSources
US United States—3,6451 in 91K3.8KLoo39
NL Netherlands—3551 in 49K355Loo9
SE Sweden—2061 in 50K206Loo6
FI Finland—1491 in 37K149Loo5
ES Spain—931 in 538K93—2
GY Guyana—511 in 15K51——
EE Estonia#664≈35 est.≈1 in 35K9Loo24

3,645 people counted by Census Bureau — Surname Frequency 2010, 2010. 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; Census Bureau — Surname Frequency 2020; CBG Familienamenbank — Dutch surname bearer counts (GBA/BRP 2007); Skatteverket — Sök hur många som har ett visst namn (living population); DVV — Nimipalvelu (Finnish name service, per-name lookup); Statistics Estonia — per-name Population Register counts (nimed); INE — Padrón per-token widgets (current living counts, given + apellidos); INE — Apellidos más frecuentes (Padrón Municipal); Guyana — Official List of Electors July 2025. 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)

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

  • English surname34 spellings in the group

    Most recorded in United States, Malaysia, Netherlands, Singapore

    Languages: English, Dutch, German

    Also written Loo, Loeo, Lo'O, Löö, Lôô

  • a separate name3 spellings in the group

    Also written Lôo, Loo

1 further group 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)

1850190019502000Jaan Lõo, b. 1872Andres Lõo, b. 1978Marcus Lõo, b. 1999
  • Jaan Lõob. 1872EEEstonian politician and poet (1872-1939)
  • Andres Lõob. 1978EEEstonian artist and musician (born 1978)
  • Marcus Lõob. 1999EEEstonian badminton player (born 1999)

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 3 sources across 1 country.

Official registers attesting Lõo
CountryRegisterYearCountRank
EE EstoniaSiseministeerium — population register name list 20232023——

Reference works 1

  • 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 Lõo mean, and where does it come from?
From English Loo, from Hokkien 呂／吕 (Lū). Doublet of Lu, Lou, Luy, and Lew. Recorded by A dictionary of surnames and Dictionary of American Family Names and 2 other sources.
In which country does Lõo have the most bearers?
In the United States, the national register counted about 3.6 thousand people named Lõo, more than in any other country we hold, where it is most often spelled loo.
Where is Lõo most common?
Measured as a share of residents rather than as a count, Lõo is densest in Guyana — about 1 in 15 thousand people — even though United States holds more of our records for it.
How common is the name Lõo?
In the United States, the national register counted 3,645 people named Lõo in 2010, about 1 in 91 thousand residents.
How common is Lõo compared with other names?
In Estonia, Lõo is the 664th most common surname of 37,297 surnames recorded there.

What do you want to know about Lõo?

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/l%C3%B5o

The same 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), 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, “Lõo” — the 664th most common surname in Estonia. Data snapshot 2026-10-10.

See how Lõo parses inside a full name →