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About the International Lean Six Sigma Institute (ILSSI)


ILSSI provide Accredited Lean Six Sigma Certifications..  ILSSI offers all certification levels in 8 different languages.  Yellow Belt, Green Belt, Black Belt and Master Black Belt level.  Also Certified Lean Practicioner,  Design for Six Sigma (DFSS) and Business Process Management (BPM).   Certified Lean Six Sigma Organisation.

The ILSSI was founded as a partnership for greater understanding and standardization between Lean Six Sigma professionals in the UK, Switzerland, EU, Africa, USA and the Middle-East with a focus on providing International collaboration, common understanding and standards for both Lean and Six Sigma principles, tools and techniques.

ILSSI runs an annual conference as well as offering training, certification, coaching and consulting services, directly and through its partner network.

Education is central to ILSSI activities. The institute's training and certification programs are divided by global region.

We have Lean Six Sigma Master Black Belts providing consulting and training services in  South East Asia, the Middle-East, Africa, North America, South America and Europe.

The institute's corporate advisory arm offers strategic advice as well as project analysis and guidance to both commercial and not-for-profit clients




About the International Association for Six Sigma Certification (IASSC)


IASSC is a Professional Association dedicated to growing and enhancing the standards within the Lean Six Sigma Community. IASSC is the only independent third-party certification body within the Lean Six Sigma Industry that does not provide training, mentoring and coaching or consulting services. IASSC exclusively facilitates and delivers centralized universal Lean Six Sigma Certification Standards testing and organizational Accreditation’s. 


Go to the IASSC Website >


IASSC CERTIFICATIONS, provide an unbiased independent third-party validation of a person’s knowledge of the topics contained within the Universally Accepted Lean Six Sigma Body of Knowledge and include Black Belt, Green Belt and Yellow Belt Certification. 


Contact :  IASSC at

During normal business hours United States Mountain Standard Time 9:00AM to 5:00PM M-F you may reach IASSC by phone at +1 (602) 734-0561.


IASSC Headquarters
The Esplanade Center
2415 East Camelback Road, Suite 700
Phoenix, Arizona 85016, United States


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