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ISO/IEC 27001 certification bodies (ANAB)

Certification bodies currently accredited by ANAB under ISO/IEC 17021-1 to certify information security management systems to ISO/IEC 27001.

50 firms listed · October 2026 snapshot

FedRAMP 3PAOGovRAMP 3PAOPCI QSACMMC C3PAOHITRUST assessorISO 27001 CBSOC 2 services sourced

Aprio, LLP.

Atlanta, GA

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Frequently asked questions

How is this list sourced?

ANAB Management Systems CB Directory is the official list, read October 3, 2026. A certification body audits and certifies against ISO/IEC 27001. This list covers ANAB-accredited bodies only; bodies accredited by other national accreditation bodies are not included. Check the live registry for changes.

Are these listings endorsements?

No. Compare the firm's services and confirm current status before engaging an auditor.

Firms are listed from official registries, each with its own as-of date. Locations are shown only where the registry or the firm's own site provides them. A listing records registry status, not an endorsement, and directory information may change. SOC 2 is a CPA attestation report, not a certificate. pa.tax is independent: listed firms pay nothing for inclusion, ranking or referrals, and firms are listed alphabetically.

Confirm current status and scope directly with the ANAB Management Systems CB Directory, as of October 3, 2026.