Jěff
given name · Latin script
Jěff is a given name written in the Latin script, with more bearers in the United States than in any other country. In Canada it is the 84th most common given name. Recorded meaning: Main GB Location (1881): W Midlands and N. relationship name from the personal name Geff, a pet form of Geoffrey. Compare Alicia Gefraywif, Alicia Gefdoghter, 1379 in Yorks Poll Tax.
- CACanada≈1 in 570(inferred from the name graph)
- NZNew Zealand≈1 in 900
- SGSingapore≈1 in 900
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). Where a country counts another spelling of the name rather than Jěff itself, the figure is that spelling’s, and it is named. Countries with no figure are shown too: flat where a national register lists the name without counting it, hatched where only our records hold it. One hue, darker where it is more common; hover a country for its figure.
- United States (measured from records)
- #330 (measured from records)
- 5 (measured from records)
- Record sources
- 648 (measured from records)
- ≈1 in 568 (inferred from the name graph)
208,615 people, 2020
of 15M given names, spellings grouped
recorded for this name
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Canada, est.
measured from records inferred from the name graph
Spellings & scripts
(measured from records)Locally spelled Jeff in US United States, GB United Kingdom, CA Canada and 5 more and Geoff in IE Ireland.
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): W Midlands and N. relationship name from the personal name Geff, a pet form of Geoffrey. Compare Alicia Gefraywif, Alicia Gefdoghter, 1379 in Yorks Poll Tax.
Cited for this meaning 6
- A concise dictionary of first names
- DUDEN Lexikon der Vornamen
- Dictionary of American Family Names
- The Oxford Dictionary of Family Names in Britain and Ireland
- Wiktionary
Attested across 16 languages in the etymology graph.
Where in the world
(measured from records)Jěff 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 | ||||
|---|---|---|---|---|---|---|
| US United States | #136 | 208,615 | 1 in 1.6K | 208K | Jeff | 648 |
| CA Canada | #84 | ≈73,000 est. | ≈1 in 568 | 1 | Jeff | 335 |
| GB United Kingdom | #237 | ≈49,000 est. | ≈1 in 1.4K | 3 | Jeff | 301 |
| PH Philippines | #870 | ≈34,000 est. | ≈1 in 3.4K | — | Jeff | 136 |
| KE Kenya | #581 | ≈26,000 est. | ≈1 in 2.2K | — | Jeff | 61 |
| AU Australia | #156 | ≈25,000 est. | ≈1 in 1.1K | 3 | Jeff | 254 |
| SG Singapore | #109 | ≈6,700 est. | ≈1 in 899 | — | Jeff | 114 |
| NZ New Zealand | #114 | ≈5,900 est. | ≈1 in 895 | — | Jeff | 134 |
| IE Ireland | #506 | ≈5,600 est. | ≈1 in 964 | — | Geoff | 90 |
208,615 people counted by Census Bureau — First Name Frequency 2020 by sex, 2020. 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; NRS — Baby names Scotland full list (1974–present); Alberta Open Government — Frequency and Ranking of Baby Names by Year and Gender; Australian national given names (aggregated state BDM). 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).
Evidence
(measured from records)No register attests this spelling yet
Frequently asked questions
- What does the name Jěff mean, and where does it come from?
- Main GB Location (1881): W Midlands and N. relationship name from the personal name Geff, a pet form of Geoffrey. Compare Alicia Gefraywif, Alicia Gefdoghter, 1379 in Yorks Poll Tax. Recorded by A concise dictionary of first names and DUDEN Lexikon der Vornamen and 4 other sources.
- Which countries have the most people named Jěff?
- In the United States, the national register counted about 209 thousand people named Jěff, more than in any other country we hold, where it is most often spelled jeff. After it come Canada, United Kingdom, Philippines and Kenya; the country table on this page ranks them.
- How common is the name Jěff?
- In the United States, the national register counted 208,615 people named Jěff in 2020, about 1 in 1.6 thousand residents.
- How common is Jěff compared with other names?
- In the United States, Jěff is the 136th most common given name of 2,815,431 given names recorded there.
What do you want to know about Jěff?
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/j%C4%9BffThe 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, “Jěff” — the 136th most common given name in United States. Data snapshot 2026-10-13.