Gui
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Meaning
“A Portuguese short form of Guilherme, the equivalent of William; famously borne by Gui Khury, the Brazilian skater who landed the first 1080 on a vert ramp.”
How popular is Gui around the world?
Gui does not appear in US Social Security baby-name records, which list only names given to at least five babies in a year. There is no popularity curve to chart: a genuinely rare pick. At the 2022 census, 198 people in Brazil were named Gui, ranked 25,581st, with a median age of 42.
Gui is on the official records of Brazil and Spain.
United States
under 5 a year
Gui does not appear in US Social Security baby-name records, which list only names given to at least five babies in a year. There is no popularity curve to chart: a genuinely rare pick.
Births with a Social Security record. Source: U.S. Social Security Administration
Brazil
1 in 1M
At the 2022 census, 198 people in Brazil were named Gui, ranked 25,581st, with a median age of 42.
Among people named Gui living in Brazil at the 2022 census, more were born in the 1970s 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
Spain
1 in 1.7M
In Spain, 27 residents are named Gui, ranked 23,884th among men, with a mean age of 36.2 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
France
last on record 1956
Gui is not on the 2025 record for France, where spellings under 3 in a year are withheld at source.
share of that year’s births on record
Births in France by year of birth, from INSEE’s fichier des prénoms (1900–2025; Mayotte from 2012); exact spellings count separately (Léo and Leo are different names), any spelling under 3 in a year and sex is withheld at source, every count is rounded to the nearest 5 at source, and nametree keeps the spellings that reached 20 in some year. Shares divide by INSEE’s count of births in France from 1957, and before that by the file’s own total for the year; INSEE says the file is not complete before 1946. Source: Insee, fichier des prénoms (last updated 2026-07-16)
Not on the record in Mexico City, Argentina, Puerto Rico, England and Wales, Canada, Ireland, New Zealand, Scotland 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 Montevideo record for 1940 to 2011: that registry withholds nothing, so this spelling was not given there in those years. Not on the South Australia record for 1944 to 2017: that registry withholds nothing, so this spelling was not given there in those years. Not on the Austria record for 1984 to 2025: Statistik Austria publishes every first name down to a single birth, so this name was not given there in those years (before 2010 the record covers babies with Austrian citizenship only). Not on Norway’s list: Statistics Norway lists only first names carried by 200 or more living people, so rarer names are not shown.
Keep exploring
The Gui deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Gui 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 Gui fits with your family’s names and surname.
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