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Notified body

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A conformity assessment body designated under the EU AI Act to carry out third-party conformity assessment of high-risk AI systems. Under the notified-body procedure it assesses a provider's quality management system and technical documentation, with access to training, validation and testing data 1.

Developed in
ch. 18, Conformity assessment, declaration, marking and registration
ch. 14, EU AI Act conformity, in order
Chapters
ch. 14, Development · ch. 18, EU AI Act
Source
1 numbered reference, listed below

Where it is used

3 chapters of the Body of Knowledge use the term. Each link opens the first section that does.

  • CE marking

    The mark showing a high-risk AI system's conformity with the EU AI Act, affixed visibly, legibly and indelibly, or digitally for systems provided digitally…

  • Conformity assessment

    The procedure by which a provider shows a high-risk AI system meets the EU AI Act before placing it on the market: internal control for most Annex III…

  • EU declaration of conformity

    The provider's signed statement, following AI Act Annex V, that a high-risk AI system meets the Act's requirements; drawn up after the conformity assessment…

  • Training, validation and testing data

    The three data sets the AI Act defines for high-risk systems: training data fits the model, validation data tunes it and guards against overfitting, and…

  • Technical documentation (Annex IV)

    The provider's technical file for a high-risk AI system, drawn up before placing on the market and kept up to date under Article 11: description, development…

  • High-risk AI system

    Under the EU AI Act, an AI system that is a safety component of, or itself, a product under Annex I legislation needing third-party conformity assessment, or…

  • AI Act (EU)

    Regulation (EU) 2024/1689, the EU's horizontal, risk-tiered law for AI, amended by the Digital Omnibus.

  • AI system

    For governance, the object the AI definition brings into scope.

Sources

  1. [1] Regulation (EU) 2024/1689 (AI Act), consolidated text as amended by Regulation (EU) 2026/1744 (Digital Omnibus on AI, in force 27 Jul 2026; definitions in Art. 3, incl. 3(1), 3(3) to 3(14), 3(14b), 3(20), 3(22), 3(23), 3(29) to 3(32), 3(49), 3(55) to 3(57), 3(60), 3(61), 3(63), 3(68); Arts. 4, 5, 6 (incl. 6(3) third subparagraph, profiling), 9, 10, 11, 13, 14, 15, 17, 22 to 27 (incl. 26(11)), 40, 41, 43, 47, 48, 50, 53 (incl. 53(1)(c)), 55, 57, 60, 72, 73, 86; Annexes I, III, IV). Publications Office of the EU (EUR-Lex). 2026-07-27. https://eur-lex.europa.eu/eli/reg/2024/1689/2026-07-27/eng (verified: primary)

Definitions of legal terms paraphrase the cited text, which governs. Dated statements are as of .

Cite this term

García Aibar, J. (2026). Notified body. In AI Governance Engineering: The Thesis & Body of Knowledge (v0.5.0), Glossary. https://doi.org/10.5281/zenodo.22956197. https://aigovernanceengineer.com/glossary/notified-body. CC BY 4.0

BibTeX

@misc{aige2026notifiedbody,
  author  = {Jorge García Aibar},
  title   = {{Notified body}},
  note    = {Glossary, AI Governance Engineering: The Thesis \& Body of Knowledge, version 0.5.0},
  year    = {2026},
  doi     = {10.5281/zenodo.22956197},
  url     = {https://aigovernanceengineer.com/glossary/notified-body}
}