Third-party independent lean
six sigma certification

IASSC, globally recognized Professional Lean Six Sigma Credentialing.

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Ready for Certification?

IASSC, globally recognized Professional Lean Six Sigma Credentialing.

Professional Lean Six Sigma Credentialing. IASSC provides a unbiased independent third-party validation of Lean Six Sigma knowledge through our globally recognized Lean Six Sigma Black Belt, Green Belt and Yellow Belt Certifications. Arrange your IASSC Certification Exams now through our On-Demand Web-Based Testing System or in one of our testing centers anywhere in the world.

Need training?

Consider these accredited training providers. Your Source for finding Accredited Lean Six Sigma Training.

IASSC Lean Six Sigma Accredited Providers are recognized for maintaining consistent, high-quality and robust training standards in alignment with IASSC Accreditation Criteria. Whether you are searching for Elearning providers, classroom training, individual instructors, self study materials or certification preparation sources, start with the Providers who have earned our world recognized Accreditations.

Accreditation Program

The IASSC Accreditations offer a unique opportunity to demonstrate your alignment to Lean Six Sigma best-practice standards.


IASSC Accredited Training Organization


IASSC Accredited Training Associate


IASSC Accredited Deployment Program


IASSC Accredited Curriculum Provider

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