Source and edition guide
Industry classification systems
Browse the five systems represented in the current finder. Each guide names the edition, links to the issuing authority and shows only the small set of records reviewed for this release.
Available guides
Choose the system and edition required by the organization receiving the code. Similar-looking codes from different systems or revisions are not interchangeable.
NAICS 2022
The U.S. federal statistical classification for business establishments, organized around their primary production activity.
Read scope and sources ↗SCIAN México 2023
INEGI's classification of economic activities for Mexico within the North American classification framework.
Read scope and sources ↗NACE Rev. 2.1
The European Union classification of economic activities used for European statistics from 2025 onward.
Read scope and sources ↗CNAE-2025
Spain's national classification of economic activities, maintained by the Instituto Nacional de Estadística.
Read scope and sources ↗ISIC Rev. 5
The United Nations international reference classification for organizing economic activities and supporting comparison across national systems.
Read scope and sources ↗