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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.

Notified body: mentions per chapter10 mentions of the term across 3 of the 23 chapters of the Body of Knowledge; the chapters the glossary cross-references are drawn solid.Cross-referenced chapterOther chapter08 Regulatory Map: 2 mentions08 Regulatory Map214 Development: 6 mentions14 Development618 EU AI Act: 2 mentions18 EU AI Act2No mentions in the other 20 chaptersSource: the Body of Knowledgev0.5.0
Notified body: mentions per chapter10 mentions of the term across 3 of the 23 chapters of the Body of Knowledge; the chapters the glossary cross-references are drawn solid.Cross-referenced chapterOther chapter000102030405060708 Regulatory Map: 2 mentions2081011121314 Development: 6 mentions61415161718 EU AI Act: 2 mentions2181920212223Source: the Body of Knowledge v0.5.0
Mentions per chapter How often each chapter names the term, with the chapters the glossary cross-references drawn solid. The longest bar is where to read the term in use; bars spread across many chapters mark a term that runs through the discipline.
Mentions as a table
Mentions of Notified body per chapter
ChapterMentionsCross-referenced
00 Preface0No
01 Definition0No
02 Why Now0No
03 Values & Principles0No
04 The Stack0No
05 Patterns0No
06 The Role0No
07 Maturity Model0No
08 Regulatory Map2No
10 Reading List0No
11 AI Defined0No
12 Governance Program0No
13 Risk Management0No
14 Development6Yes
15 Deployment0No
16 Fairness & XAI0No
17 Incidents0No
18 EU AI Act2Yes
19 Privacy & AI0No
20 Existing Law0No
21 AI Laws Worldwide0No
22 Principles & Standards0No
23 AI Agents0No
Notified body: related terms and patternsThe term at the centre; related terms on solid edges, the terms it is contrasted with on dashed edges, and the patterns that use it most in the colour of their layer.RelatedNotified bodyRelated terms (8)AI Act (EU) · RelatedAI Act (EU)AI system · RelatedAI systemCE marking · RelatedCE markingConformity assessment · RelatedConformity assessmentEU declaration of conformity · RelatedEU declaration of conformityHigh-risk AI system · RelatedHigh-risk AI systemTechnical documentation (Annex IV) · RelatedTechnical documentationTraining, validation and testing data · RelatedTraining
Notified body: related terms and patternsThe term at the centre; related terms on solid edges, the terms it is contrasted with on dashed edges, and the patterns that use it most in the colour of their layer.RelatedRelated terms (8)AI Act (EU) · RelatedAI Act (EU)AI system · RelatedAI systemCE marking · RelatedCE markingConformity assessment · RelatedConformity assessmentEU declaration of conformity · RelatedEU declaration of conformityHigh-risk AI system · RelatedHigh-risk AI systemTechnical documentation (Annex IV) · RelatedTechnical documentationTraining, validation and testing data · RelatedTrainingNotified body
The term's neighbourhood Terms related to this one on solid edges, terms it is often confused with on dashed edges, and the patterns that use it most in the colour of their layer. Follow a dashed edge to check the distinction before you use either term.
Neighbourhood as a table
Neighbourhood of Notified body
FamilyItemRelation
Related termsAI Act (EU)Related
Related termsAI systemRelated
Related termsCE markingRelated
Related termsConformity assessmentRelated
Related termsEU declaration of conformityRelated
Related termsHigh-risk AI systemRelated
Related termsTechnical documentation (Annex IV)Related
Related termsTraining, validation and testing dataRelated
  • 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}
}