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Name laws

When a state gets a veto — Icelandic lists, German Namensrecht, Japanese koseki and the quiet power of the registrar.

At a glance
Score intensity

Darker cells mean a higher score for this topic on that metric.

Score profile

Each bar is a 0-100 atlas score for this topic, not a timeline.

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Score profile
Timeline

Milestones in order. This is history, not a weekly activity grid.

1538 English parish mandate15381804 French civil code influence18041875+ Japanese registers1875+1890s– U.S. state change statutes1890s–1991 Icelandic committee statute19911981 / updates Jinmeiyō list1981 / updat2000s Spanish surname-order reforms2000s2010s– Equality challenges2010s–
  1. English parish mandate
  2. French civil code influence
  3. Japanese registers
  4. U.S. state change statutes
  5. Icelandic committee statute
  6. Jinmeiyō list
  7. Spanish surname-order reforms
  8. Equality challenges
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14 min read

Share a naming topic with registry and script notes, not a fortune list.

Last reviewed Sources & creditsMedia creditsMethodology

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A naming law is the set of rules that decide whether a string may enter a civil register — and who may change it later.

Iceland’s naming committee, Germany’s Namensrecht and Japan’s koseki-plus-jinmeiyō system are the atlas’s three famous high-friction examples. Most English-speaking jurisdictions are looser but not lawless.

This page is a map of vetoes. It is not legal advice, and it will not smuggle a luck chart into a statute that does not contain one.

Hero articleNaming law
IcelandNaming committee
GermanyNamensrecht
JapanKoseki / jinmeiyō
U.S.State statutes
Not in the statuteStroke luck

Profile

Identity weight
65
Trend volatility
25
Legal friction
98
Cultural depth
70
Practical difficulty
72
Everyday reach
45

Seven chapters

Frequently asked questions

What does a naming law usually regulate?
Allowed characters, length, offensive strings, sex-marking, surname transmission after marriage, and the procedure for change.
Why is Iceland famous?
Mannanafnanefnd reviews given names for grammatical fitness and list compatibility. Patronymics are the normal last element. High friction, small population, big headlines.
What is Namensrecht?
German civil-status rules on given names and family names, including child-welfare refusals and detailed marriage/child surname options.
What is the koseki?
Japan’s family register — the legal source of a person’s name. Given-name characters generally must come from approved sets (jōyō/jinmeiyō). Married couples have been required to share one surname.
Can the U.S. ban a baby name?
States can refuse numerals, obscenity or confusing strings, and courts handle adult changes. Friction is lower than Iceland, not zero.
Do SSA and ONS enforce names?
No. They count what was registered. The veto, if any, sat with the registrar earlier.
Is a Spanish second surname a legal requirement?
In Spain and many Latin American systems, two surnames are the normal legal form. Foreign software that drops one is the practical injury.
Can I cite this page in court?
No. Read the current statute and, if needed, a licensed lawyer. Laws move.

Open the name lab → Which naming lens fits you? Compare topics