Rajaratnam
surname · Latin script
(measured from records)Officially recorded in 11 countries · latest register: BFS, 2024
/ɹɑdʒɝˈɑtnɑm/(machine-generated) pronunciation, model-generated
Rajaratnam is a surname written in the Latin script, most frequently recorded in the United Kingdom. Recorded meaning: Main GB Location (1881): Somerset. from Ó Raghailligh, see O’Reilly . • Current frequencies: GB 15, Ireland 0 • GB frequency 1881: 36 • Main GB location 1881: Somerset English: see Raikes .
Spellings & scripts
(measured from records)2 other spellings are counted as the same name:
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)Main GB Location (1881): Somerset. from Ó Raghailligh, see O’Reilly . • Current frequencies: GB 15, Ireland 0 • GB frequency 1881: 36 • Main GB location 1881: Somerset English: see Raikes . Further information: this name is rare in Britain but is thriving in the USA.
Cited for this meaning 1
- The Oxford Dictionary of Family Names in Britain and Ireland
Where in the world
(measured from records)Rajaratnam counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.
| Country | Most common spelling | ||
|---|---|---|---|
| GB United Kingdom | — | 400 | — |
| CH Switzerland | — | 194 | — |
| US United States | — | 194 | — |
| NO Norway | — | 86 | — |
| NL Netherlands | — | 38 | — |
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: Surnames of England and Wales (taliesin-arlein.net, Sept 2002 electoral register); BFS — Familiennamen der Wohnbevölkerung (surnames); Census Bureau — Surname Frequency 2020; SSB — Navnesøk (name-search service, living population); CBG Familienamenbank — Dutch surname bearer counts (GBA/BRP 2007). 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)- Sinnathamby Rajaratnamb. 1915SGSingaporean politician (1915–2006)
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)Evidence
(measured from records)19 registers and reference works attest this spelling, across 11 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| GB United Kingdom | Surnames of England and Wales (taliesin-arlein.net, Sept 2002 electoral register) | 2002 | 400 | #13,397 |
| CH Switzerland | BFS — Familiennamen der Wohnbevölkerung (surnames) | 2024 | 194 | #6,421 |
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 194 | #99,694 |
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 167 | #106,570 |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 122 | #128,797 |
| NO Norway | SSB — Navnesøk (name-search service, living population) | — | 86 | #17,473 |
| NL Netherlands | CBG Familienamenbank — Dutch surname bearer counts (GBA/BRP 2007) | 2007 | 38 | #36,398 |
| US United States | wru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.) | — | — | — |
Reference works 3
- The Oxford Dictionary of Family Names in Britain and Ireland
- Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
- Wikipedia surname tokens
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 Rajaratnam mean, and where does it come from?
- Main GB Location (1881): Somerset. from Ó Raghailligh, see O’Reilly . • Current frequencies: GB 15, Ireland 0 • GB frequency 1881: 36 • Main GB location 1881: Somerset English: see Raikes . Recorded by The Oxford Dictionary of Family Names in Britain and Ireland.
- How do you pronounce Rajaratnam?
- A machine transcription gives /ɹɑdʒɝˈɑtnɑm/ (IPA) for English.
- In which country does Rajaratnam have the most bearers?
- Rajaratnam is most frequently recorded in the United Kingdom.
What do you want to know about Rajaratnam?
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/rajaratnamThe 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, “Rajaratnam”. Data snapshot 2026-10-13.