Iī

surname · Latin script

Recorded as a male name· opposite-gender records fall within measured source noise

Iī is a surname written in the Latin script, with more bearers in the United States than in any other country. Recorded meaning: Borrowed from Japanese 井伊 (Ii).

rarermore common
  • USUnited States1 in 589K(measured from records)
  • MAMorocco≈1 in 825K
  • DZAlgeria≈1 in 928K

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.

United States (measured from records)

565 people, 2010

Sources
111 (measured from records)

Highest-authority source

1 in 589K (inferred from the name graph)

United States

measured from records inferred from the name graph

Name dossier (print, CSV)

Spellings & scripts(measured from records)

23 other spellings are counted as the same name:

Locally spelled Ii in DZ Algeria, TN Tunisia, SA Saudi Arabia, Ïï in EG Egypt and Īī in MA Morocco.

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)

Borrowed from Japanese 井伊 (Ii).

Sources 3

  • 국립국어원 외래어 표기 용례 자료 (NIKL loanword/foreign-name transcription examples)
  • Wiktionary
  • Schuessler, ABC Etymological Dictionary of Old Chinese (2007)

Attested across 2 languages in the etymology graph.

Where in the world(measured from records)

Iī 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.

Where Iī is recorded, by country
CountryMost common spellingSources
US United States5651 in 589K565—111
DZ Algeria≈46 est.≈1 in 928K—Ii15
EG Egypt≈45 est.≈1 in 2.3M—Ïï21
MA Morocco≈43 est.≈1 in 825K—Īī25
SA Saudi Arabia≈25 est.≈1 in 1.4M—Ii27
TN Tunisia≈9 est.≈1 in 1.3M—Ii15

565 people counted by Census Bureau — Surname Frequency 2010, 2010. 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 — Surname Frequency 2010. 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).

Other recorded senses(measured from records)

Iī is also recorded in one other lexicon, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.

  • In Latvian, apdzīvota vieta Beļģijā, Valonijas reģiona Ljēžas provincē

    as a wordTēzaurs.lv (Dictionary and Thesaurus of Latvian, AiLab / LU MII)

Ordered by how much of this spelling's record each language holds, so a sense from a language the name is barely used in sits last rather than first.

Evidence(measured from records)

No register attests this spelling yet

None of the official registers or reference works in our corpus lists Iī under this spelling. The statistics on this page rest on person records, and the related names are inferred from the name graph.

Frequently asked questions

What does the name Iī mean, and where does it come from?
Borrowed from Japanese 井伊 (Ii). Recorded by 국립국어원 외래어 표기 용례 자료 (NIKL loanword/foreign-name transcription examples) and Wiktionary and 1 other source.
In which country does Iī have the most bearers?
In the United States, the national register counted about 565 people named Iī, more than in any other country we hold.
Where is Iī most common?
Iī is densest in the United States, where the national register counts about 1 in 589 thousand people carrying it.
How common is the name Iī?
In the United States, the national register counted 565 people named Iī in 2010, about 1 in 589 thousand residents.

What do you want to know about Iī?

Nobody replies to these one by one, but what readers ask decides what these pages answer next.

Please leave out anyone's personal details (see Privacy).

Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/i%C4%AB

The same 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), and bulk access is licensed separately.

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, “Iī”. Data snapshot 2026-10-10.

See how Iī parses inside a full name →