Data & Licensing
Names come from open datasets. Several require attribution; two carry a share-alike (copyleft) clause. This page must stay published if the site is public.
Public domain / CC0 (no strings)
US SSA · Popular Names by Country · Scotland (NRS) · Northern Ireland (NISRA) · Brazil (IBGE) · Poland · Mexico · Māori (Stats NZ) · Mythology (Corpora).
Attribution required (CC-BY / Licence Ouverte / NLOD / OGL)
UK (ONS) · France (INSEE) · Ireland (CSO) · Sweden (SCB) · Finland (DVV) · Ontario & Quebec (Canada) · Italy (AGID) · Belgium · Denmark · Iceland · Norway (SSB) · Czechia · Slovenia · Latvia · Germany / Cologne. Nicknames: Apache 2.0.
Share-alike / copyleft (flagged)
Spain / INE (ODbL) and firstname-database (GFDL) are free to use, but if you publish the underlying dataset as a download, that download must be offered under the same open license. Displaying names on the site is fine; distributing the raw combined dataset is the action that triggers these terms.
Full manifest
A complete per-source list with licenses lives in
names-database/sources/SOURCES.md.