Lex
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Meaning
short form of Alexander, Greek for 'defender of the people'
The formal names behind Lex
Lex is an established short form of this name.
Alexander · Greek origin · defender of men, from Greek Alexandros, combining words for "defend, help" and "man"
Lex across languages
One shared root links 18 names across 7 languages.
Shared root: from Greek Alexandros, "defender of men"; Alexander the Great’s fame and medieval stories helped spread the name in Europe
The constellation
14 more branches of this family
How popular is Lex around the world?
In the United States, 484 babies were named Lex between 2020 and 2025. In Canada, 13 boys named Lex were born in 2024, ranked 1,614th among boys that year.
Lex is on the official records of the United States, Canada, Mexico City, England and Wales, Spain and Brazil.
United States
1 in 45,000
In the United States, 484 babies were named Lex between 2020 and 2025.
Shape drawn from US Social Security baby-name records. Lex peaked in the 2000s and the 2020s in nearly equal measure.
Births with a Social Security record. Source: U.S. Social Security Administration
Canada
1 in 28,000
In Canada, 13 boys named Lex were born in 2024, ranked 1,614th among boys that year.
share of that year’s name registrations
First given names from provincial and territorial vital statistics across Canada; any name-sex-year under 5 is excluded at source, and small Quebec counts carry a randomized adjustment made at source. Shares divide by Statistics Canada’s count of live births for the year; the 2024 count is preliminary. Source: Statistics Canada, first names at birth (table 17-10-0147-01)
Mexico City City
1 in 59,000
In Mexico City, there were 2 registrations of Lex in 2022.
share of that year’s registrations in the city
Civil-registry acts in Mexico City by registration year. Counts are lower bounds (names under 6 in a month and borough are removed at source) and count name-instances, not people; compound names are split, so “Maria Jose” counts under each part. 2023, a partial extract through 3 Mar with no cell on record for this name, is excluded. Source: Registro Civil of Mexico City, open data portal, registered given names 2000-2023
England and Wales
1 in 98,000
In England and Wales, 6 boys named Lex were born in 2025, ranked 3,256th among boys that year.
share of that year’s name registrations
Birth registrations in England and Wales (not the whole UK); exact spellings are counted separately, and any spelling under 3 in a year is withheld at source. Source: Office for National Statistics, baby names in England and Wales
Spain
1 in 2.2M
In Spain, 20 residents are named Lex, ranked 30,653rd among men, with a mean age of 15.6 years.
Residents of Spain on 1 January 2025. Spain publishes how old a name’s living bearers are, not a birth series, so there is no year chart. Source: INE (Spain), Censo de Población anual, 1 January 2025
Argentina
last on record 2022
Lex is not on the 2024 record for Argentina, where small counts are withheld at source.
The count never rose above 3 in a year, too few to chart.
Given-name components of births in Argentina 2012–2024; national cells are lower bounds and no sex split is published. Source: RENAPER (Argentina), Dirección Nacional de Población, given names 2012-2024
Austria
last on record 2024
Lex is not on the 2025 record for Austria, which publishes every first name down to a single birth, so the name was not given there that year.
The count never rose above 1 in a year, too few to chart.
Live births in Austria by year of birth, 1984–2025, from Statistik Austria’s first-name statistics; spellings that differ only by special characters are counted together (umlauts stay apart), every name down to a single birth is published, and the count covers babies with Austrian citizenship only until 2009, every baby from 2010, and from 2015 also births abroad to mothers living in Austria. Shares divide by Statistik Austria’s count of live births from 2010, and before that by the file’s own total for the year. Source: Statistik Austria - data.statistik.gv.at (OGDEXT_VORNAMEN_1, updated 2026-07-09)
Brazil
At the 2022 census, 85 people in Brazil were named Lex, ranked 46,211th, with a median age of 23.
Among people named Lex living in Brazil at the 2022 census, more were born in the 2000s than in any other decade.
people alive at the 2022 census, by decade of birth
People alive and resident in Brazil at the 2022 census, a living-population count, not births; names under 20 are withheld at source. Source: IBGE, Censo Demográfico 2022
Ireland
last on record 2018
Lex is not on the 2025 record for Ireland, where names under 3 in a year are withheld at source.
The count never rose above 3 in a year, too few to chart.
Exact registered spellings from Irish vital statistics; any name under 3 in a year is withheld at source, and accented spellings (fadas) are recorded reliably only from 2018. Source: Central Statistics Office (Ireland), Irish babies' names
Montevideo City
last on record 1989
Lex is not on the 2011 record for Montevideo, whose registry withholds nothing, so the spelling was not given there that year.
The count never rose above 1 in a year, too few to chart.
Births in the department of Montevideo (not all of Uruguay) by first name and year of birth, 1940–2011, from the city’s civil registry, which writes names in capitals, almost always without accents; counted as spelling groups (accent and punctuation variants merged), nothing is withheld at source, and 2012 is excluded as a partial year. Source: Servicio de Registro Civil, Intendencia de Montevideo, Partidas de Registro Civil de Montevideo (Licencia de Datos Abiertos - Uruguay); 2012 dropped as partial
New Zealand
last on record 1955
Lex is not on the 2025 record for New Zealand, where names under 10 in a year are excluded at source.
share of that year’s name registrations
First given names from New Zealand birth registrations, grouped by registration year; any name under 10 in a year is excluded at source. Shares divide by Stats NZ’s count of births registered to mothers living in New Zealand, under 1% below the registry’s own count. Source: Department of Internal Affairs (New Zealand), baby name popularity over time
Scotland
last on record 2023
Lex is not on the 2024 record for Scotland, where spellings under 3 in total are suppressed at source.
The count never rose above 5 in a year, too few to chart.
Births registered in Scotland; different spellings count separately but accents are merged at source, and any spelling under 3 in total is suppressed. Source: National Records of Scotland, babies' first names
South Australia
last on record 2015
Lex is not on the 2017 record for South Australia, whose registry publishes every name given that year.
The count never rose above 3 in a year, too few to chart.
Births registered in South Australia (not all of Australia) by first name and year of registration, 1944–2017, from the state’s Births, Deaths and Marriages registry, which publishes every name down to a single birth in capitals; a spelling its export repeats inside a year is counted once, and from 2018 only a top 100 is published, so the series ends at 2017. Source: Consumer and Business Services (South Australia), popular baby names
Not on the record in Puerto Rico and Poland: those registries withhold small counts, so rare uses may sit below their floors.
Not on the Chile record: nametree keeps spellings that reached 5 registrations in some year, so rarer uses are not shown. Not on the France record: nametree keeps spellings that reached 20 births in some year, so rarer uses are not shown. Not on Norway’s list: Statistics Norway lists only first names carried by 200 or more living people, so rarer names are not shown.
The Lex deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Lex truly comes from, how it traveled, and what a century of records reveals. If you have grown a tree on nametree, it also considers how Lex fits with your family’s names and surname.
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