Si
loc · Latin script
Recorded for both men and women· direction only, no split published
Si is a name written in the Latin script, with more bearers in Vietnam than in any other country. Recorded meaning: Acronym of Latin Sancte Ioannes, the phrase ending the hymn Ut queant laxis from earlier words of which the other notes of solfège were derived.
- VNVietnam≈1 in 5K(inferred from the name graph)
- ATAustria≈1 in 20K
- AUAustralia≈1 in 36K
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.
- Vietnam (inferred from the name graph)
- Sources
- 74 (measured from records)
- ≈1 in 5.0K (inferred from the name graph)
≈20,000 people, est.
Highest-authority source
Vietnam, est.
measured from records inferred from the name graph
Meaning & origin(measured from records)
Acronym of Latin Sancte Ioannes, the phrase ending the hymn Ut queant laxis from earlier words of which the other notes of solfège were derived.
Sources 10
- Dizionario dei cognomi italiani
- 국립국어원 외래어 표기 용례 자료 (NIKL loanword/foreign-name transcription examples)
- Digital Pāḷi Dictionary
- Wiktionary
- 2500 noms propres devenus communs : dictionnaire étymologique (éponymes, antonomases et hypallages)
Attested across 14 languages in the etymology graph.
Where in the world(measured from records)
Si 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 | |||
|---|---|---|---|---|---|
| VN Vietnam | ≈20,000 est. | ≈1 in 5K | listed | — | — |
| US United States | 2,488 | 1 in 134K | 1.8K | — | 46 |
| GB United Kingdom | ≈1,200 est. | ≈1 in 53K | 3 | — | 20 |
| FR France | ≈1,000 est. | ≈1 in 66K | 150 | — | 1 |
| AU Australia | ≈700 est. | ≈1 in 36K | 1 | — | — |
| AT Austria | ≈450 est. | ≈1 in 20K | 3 | — | — |
| NL Netherlands | ≈440 est. | ≈1 in 40K | 37 | — | 1 |
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; Census Bureau — Surname Frequency 2020; INSEE — Fichier des prénoms (1900–2024); Meertens NVB — Nederlandse Voornamenbank (live per-name BRP counts, 1790-2017); NRS — Baby names Scotland full list (1974–present); Statistik Austria — STATatlas Vornamen WFS (per-name time series 1984–2024); SA BDM — Popular baby names South Australia (1944–present). 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).
Notable people with this name(measured from records)
- Li Sib. 280CNChinese politician of the Qin Dynasty
- Shi Nai'anb. 1296CNnot in their usual nameChinese writer (1296-1372)
- Stan Shihb. 1944TWnot in their usual nameTaiwanese businessman, Chairman Emeritus of Acer Incorporated (born 1944)
- Bolo Yeungb. 1946CNnot in their usual nameHong Kong actor
- 习近平b. 1953CNnot in their usual nameGeneral Secretary of the Chinese Communist Party since 2012 (born 1953)
- Shi Jiayib. 1983CNnot in their usual nameChinese footballer
- Si Tianfengb. 1984CNChinese racewalker
- Shi Tingmaob. 1991CNnot in their usual nameChinese diver
- Zhao Lusib. 1998CNnot in their usual nameChinese actress (born 1998)
- Xia Yub. 2297CNnot in their usual nameXia Dynasty king and founder
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 57 sources across 31 countries.
Reference works 4
- 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)
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 Si mean, and where does it come from?
- Acronym of Latin Sancte Ioannes, the phrase ending the hymn Ut queant laxis from earlier words of which the other notes of solfège were derived. Recorded by Dizionario dei cognomi italiani and 국립국어원 외래어 표기 용례 자료 (NIKL loanword/foreign-name transcription examples) and 8 other sources.
- In which country does Si have the most bearers?
- Mondonomo estimates about 20 thousand people named Si in Vietnam, more than in any other country we hold.
- How common is the name Si?
- In the United States, the national register counted 2,488 people named Si in 2020, about 1 in 134 thousand residents.
What do you want to know about Si?
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/siThe 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, “Si”. Data snapshot 2026-10-10.