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IAD

International Accreditation Directory

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The free, independent register of certification bodies and the certificates they issue.

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Example record, checked live

Certificate IAD-2026-004128

  1. Accreditation bodyCommonwealth Accreditation Service
  2. Certification bodyMeridian Quality Assurance
  3. Certified organizationExample Organization A, United Kingdom
Standard
ISO 9001:2015
Expires
11 Mar 2027
Active on the register

What a verification check shows

The register record for certificate IAD-2026-004128: active, ISO 9001:2015, with its accreditation body, certification body and organizationThe listing for Meridian Quality Assurance, the certification body that issued the certificateThe listing for Commonwealth Accreditation Service, the accreditation body that oversees it

  1. Certificate ID

    Confirms the certificate ID is listed in the public register

  2. Certification Body

    Shows the standard, status, and the issuing certification body

  3. Accreditation Body

    Links back to the accreditation body responsible for oversight

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Who IAD is for

  • Certification bodies

    List the organizations you certify so clients can verify status publicly.

  • Accreditation bodies

    Register the certification bodies operating under your accreditation.

  • Procurement & audit teams

    Look up a certificate ID before accepting it as evidence of compliance.

From application to public listing

The process is the same for every applicant, so every entry on the register has been reviewed against the same published criteria.

  1. Submit an application

    A certification body, accreditation body, or certified organization submits its details and supporting documents through the Apply for Listing form.

  2. Review against listing criteria

    IAD checks the submission against its published listing criteria, including scope, accreditation status, and the ISO standard involved.

  3. Publish on the public register

    Approved entries are published on the register with a unique certificate ID, so anyone can search and verify the listing at any time.

An independent record of who is certified, and by whom

IAD was built to answer one question clearly: is this ISO certificate genuine. The register connects every certified organization to the certification body that issued its certificate, and every certification body to the accreditation body responsible for overseeing it.

  • Lists certification bodies, accreditation bodies, and the organizations they certify
  • Reviews every applicant against the same published listing criteria
  • Lets anyone verify a certificate ID without creating an account
Registry coverage
Global, open to any accredited body
Operating model
Independent, non-profit register
Public access
Free certificate verification
A laboratory scientist pipetting a sample inside a safety cabinet

Four ways to use IAD

ISO standards indexed by IAD

Each standard entry links to certification bodies accredited to certify organizations against it.

  1. Quality Management

    ISO 9001:2015

    Sets out requirements for a quality management system, focused on consistent product and service quality.

  2. Environmental Management

    ISO 14001:2015

    Specifies requirements for managing environmental responsibilities in a systematic way.

  3. Occupational Health & Safety

    ISO 45001:2018

    Covers the management of occupational health and safety risks within an organization.

  4. Information Security

    ISO 27001:2022

    Defines requirements for an information security management system, including risk treatment.

  5. Food Safety Management

    ISO 22000:2018

    Combines food safety management with the general principles of a management system.

  6. Energy Management

    ISO 50001:2018

    Provides a framework for managing energy performance, including efficiency and consumption.

How the register stays trustworthy

  • Independent & non-profit

    IAD is not owned by a certification or accreditation body, so listings are not influenced by commercial interests.

  • Published listing criteria

    Every applicant is reviewed against the same documented criteria, available on the Membership page.

  • Open to any region

    Certification and accreditation bodies from any country can apply, provided they meet the listing criteria.

  • Free public verification

    Searching the register and verifying a certificate ID does not require an account or payment.

Ready to get listed or verify a certificate?

Certification and accreditation bodies can apply for listing. Anyone else can search the register and verify a certificate ID in under a minute.

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Photographs via Wikimedia Commons: Shixart1985 (CC BY 2.0), Diane A. Reid (public domain), MassDOT (public domain).