| Registrar | ISO Standards | |
| ABS Quality Evaluations Inc. | AS9100, AS9120, ISO 13485, ISO 14001, ISO 50001, ISO 9001, RC (RC14001 & RCMS), TL 9000 | |
| Advantage International Registrar, Inc. | ISO 9001, ISO 14001, AS 9100, AS 9120 | |
| American Certification Group | ISO 9001 | |
| Advanced Certification Limited | ISO 9001, ISO 14001, EFfCI GMP, OHSAS 18001, ISO 22716, ISO 50001, ISO 22000, ISO 17100 | |
| American Global Standards, LLC | ISO9001, ISO14001, ISO27001, AS9100, 9120,9110, ISO13485, ISO15288, ISO17020, ISO17024, ISO17025, ISO18788, ISO2000--1, ISO20700, ISO21508, ISO22000, ISO22301, ISO24748-4, ISO26000, ISO26702, ISO27001, ISO28000, ISO31000, ISO37001, ISO41001, ISO45001, ISO50001 | |
| American International Accreditation Organization (AIAO-BAR) | ISO 9001, ISO 14001, OHSAS 18001, ISO 19770, ISO 20000, ISO 22000, ISO 22301, ISO 27001, ISO 50001 | |
| American Management Technology Inc. | ISO 9001 | |
| American Systems Registrar | ISO 9001, IATF 16949, ISO 13485, ISO 45001, ISO 14001, AS 9100 | |
| American Petroleum Institute Quality Registrar | ISO 9001, ISO 14001 | |
| AMTec Registrar | ISO 9001-2015 | |
| Apave Certification | ISO 9001, ISO 14001, ISO 45001, ISO 3834, EN 1090, ISO 22000, ISO 18788, ISO 27001, ISO 22301, ISO 22716, ISO 50001, EN 9100, ISO 19443 | |
| Asacert UK Ltd. | ISO 9001, ISO 14001, OHSAS 18001, ISO 19770, ISO 20000, ISO 22000, ISO 22301, ISO 27001, ISO 50001, CE Marking/EN 1090, ISO 3834 | |
| AudIT3 LLC | ISO 9001, ISO 14001 | |
| Aviation Suppliers Association | AS9100, AS9120, ISO 9001 | |
| Bluestar Management Systems | ISO 9001, ISO 14001, OHSAS 18001 | |
| BQC | ISO 9001, ISO 22000, ISO 14001, OHSAS 18001, ISO 50001, ISO 13485, ISO/IEC 27001, ISO 37001, ISO 29990, ISO 20000, HALAL | |
| BMQR Certifications Pvt Ltd | ISO 9001,14001,3834,45001,50001,13485,16949,9000, 20000-1;22000,17025 | |
| BSI Assurance UK Limited | ANSI/AIHA Z10, AS9100, AS9110, AS9120, ASRP (ISO 14001), ASRP (ISO 9001), BS OHSAS 18001, CAAT (QMS), CSA Z1000, FSSC 22000, ISO 14001, ISO 22000, ISO 50001, ISO 9001, ISO/IEC 20000-1, ISO/IEC 27001, RC (RC14001 & RCMS), TL 9000 | |
| Bureau Veritas Certification Holding | AS9100, AS9110, AS9120, ATFS, ISO 14001, ISO 9001, RC (RC14001 & RCMS), SFI, TL 9000 | |
| EAGLE Certification Group | AS9100, AS9120, BS OHSAS 18001, ISO 13485, ISO 14001, ISO 9001 | |
| Global Compliance Service | ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, ISO 21401 | |
| Global Standards S.C. | ISO 9001, ISO 14001, ISO 22000, FSSC 22000 | |
| Government and Military Certification Systems, Inc. | ISO 9001, ISO 14001, ISO 27001, ISO 20000-1, TL 9000, AS 9100/9110, OHSAS 18001 | |
| Great Western Registrar LLC | AS9100, AS9110, AS9120, ISO 9001 | |
| InterConformity Assessment and Certification Company | ISO 9001, ISO 9004, ISO 10001, ISO 10002, BS 8477, PAS 99, ISO 20252, ISO 14001, ISO 14004, ISO 50001, ISO 22000, ISO/TS 22002-1, ISO/TS 22004, ISO 22006, PAS 220, PAS 223, HACCP, OHSAS 18001, OHSAS 18002, OHSAS 18001, BS 18004, AS/NZS 4801, AS 8003-2003, ISO 26000, ISO/IEC 27001, ISO/IEC 20000-1, ISO/IEC 90003, ISO/IEC 27003, ISO/IEC 20000-2, ISO 31000, ISO/IEC 27005, AS/NZS 4360, ISO 28000, ISO 22301, ISO/IEC 27031 | |
| Intertek | A variety of ISO standards including ISO 9001, ISO 14001, and ISO 45001 | |
| International Standards Authority Inc. | AS9100, AS9120, ISO 9001 | |
| IQS – Infinity Quality Services | ISO9001,ISO14001 ,ISO45001 ,ISO22000 ,ISO18788 ,ISO41001 ,27001 ,ISO17015 ,HACCP ,FSSC ,Organic Certifications ,Halal Certifications,Food Grade Certification,SA 8000 Social Accountability Certification,Certification of Fitness for Machinery | |
| Qualitivity, Inc. | ISO 9001 for Quality Management Systems; ISO 27001 for Information Security Management Systems; among other popular standards | |
| NSF International Strategic Registrations Ltd. | AS9100, AS9110, AS9120, ATFS, BS OHSAS 18001, e-Stewards®, FSSC 22000, ISO 13485, ISO 14001, ISO 22000, ISO 50001, ISO 9001, ISO/IEC 20000-1, ISO/IEC 27001, R2, RC (RC14001 & RCMS), RIOS, SFI | |
| NSAI Inc. | AS9100, AS9120, ISO 14001, ISO 9001, ISO/IEC 27001, TL 9000 | |
| Orion Registrar Inc. | AS9100, AS9110, AS9120, BS OHSAS 18001, e-Stewards®, ISO 14001, ISO 9001, R2, RIOS, TL 9000 | |
| Performance Review Institute Registrar | AS9100, AS9110, AS9120, ISO 9001, ISO14001, OHSAS 18001 | |
| Perry Johnson Registrars Inc. | AS9100, AS9110, AS9120, BA 9000, e-Stewards®, ISO 13485, ISO 14001, ISO 9001, R2, RC (RC14001 & RCMS), RIOS, TL 9000 | |
| RONET International Certification Services Ltd | ISO 14001, ISO 9001 | |
| SAI Global | AS9100, AS9110, AS9120, e-Stewards®, ISO 13485, ISO 14001, ISO 50001, ISO 9001, R2, RC (RC14001 & RCMS), RIOS, SFI, TL 9000, IATF 16949 | |
| SRI Quality System Registrar | AS9100, AS9120, ISO 13485, ISO 14001, ISO 9001, ISO 45001, ISO/IEC 20000-1, ISO/IEC 27001, RCMS | |
| The Registrar Company | AS9100, AS9120, ISO 14001, ISO 9001 | |
| World Certification Services Ltd. | AS9100, ISO 14001:2015, ISO 14001:2004, ISO 9001:2015, ISO 9001:2008, BS OHSAS 18001, ISO 22000, ISO/IEC 27001, HACCP | |
ISO Registrar List
Below is a list of ISO registrars and the standards they service.