Lean Six Sigma training

We offer a host of Lean Six Sigma courses enabling you to become a specialist in the area of continuous process improvement. Our courses provide an excellent opportunity for personal development and Lean Six Sigma certification can greatly improve career prospects.  

Which course is best for you?Let the study guide help you to make a choice or contact us.
Course guide


The Lean Six Sigma Company collaborates with multiple Universities across the world. 


Lean Six Sigma is a proven methodology aimed at improving productivity, increasing customer satisfaction and reducing operational costs.

The Lean Six Sigma Company is Europe’s leading provider of Lean Six Sigma training. We support both organizations and individual delegates in their ambition to continuously improve processes. Our focus is on the practical application of Lean Six Sigma. (What is Lean Six Sigma?)

Our customers range from multinational companies to private individuals in both profit and nonprofit sectors. With offices in multiple locations, we are able to support you locally and internationally. 

The Lean Six Sigma Company provides courses in Canada, the United Kingdom, France, Germany, Switzerland, Italy, The Netherlands, Belgium, Ireland and Balkan countries. 

Countries in which we are active




Lean Six Sigma in your company

Although Lean Six Sigma is best known as a project-based improvement structure, it is much broader than that. Lean Six Sigma is an established philosophy, an organizational and improvement structure as well as a set of tools. Using this perspective Lean Six Sigma addresses organizational issues with respect to competitiveness, cost reduction, and customer satisfaction. 

Depending on your ambition, Lean Six Sigma can be implemented in phases. Every organization is unique, without a common blueprint that universally applies. Together with you, The Lean Six Sigma Company will develop a plan of action tailored to your organization.

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Four reasons to choose us

In the 90s organisations were applying either Lean or Six Sigma. In 2002, the first literature about combining the methodologies was published. The Lean Six Sigma Company was founded in June of that year and our founders strongly believe in the benefits of combining Lean and Six Sigma. 

A lot has changed since 2002. Today Lean cannot be imagined without Six Sigma any longer and globally a large community has emerged which focuses on the combined methodologies.

Over the past 16 years, thousands of professionals and hundreds of companies have realised their Lean Six Sigma ambitions through our courses and certification.

1) Internationally accredited and recognised certification

Our Lean Six Sigma courses are acknowledged internationally.

We are, to this day, the only provider with an official Postgraduate accreditation for the Black Belt training (The Netherlands and Belgium).

The Lean Six Sigma Company provides courses in the United Kingdom, Canada, France, Germany, Switzerland, Italy, The Netherlands, Belgium, Ireland, Serbia, Slovenia and Spain. 

Content of the courses is in accordance with international standards (ISO18404 and ISO13053)

Our courses are provided in English, French, Spanish, German, Italian and Dutch.

2) Continuously improving our courses

“Practice what you preach” and we preach quality. Spearheaded by our Master Black Belts, training courses are continuously improved. Having experience with hundreds of organisations, we have examples from virtually every industry.

Historically Lean Six Sigma has its roots in the manufacturing industry. Many of our Master Black Belts were certified by manufacturing companies such as General Electric, Toyota, RioTinto, DuPont and Avery Denison. 

In addition, we have worked with many transactional businesses ranging from financial services to healthcare. We have developed specific training programmes for service-oriented industries. 

Having such a large network of Master Black Belts, we pride ourselves in the depth of the knowledge available. Monthly, Master Black Belt meetings are organised to share experiences and exchange latest developments. Bi-annually knowledge sharing events take place throughout Europe to ensure we provide the best training sessions that meet market requirements taking the latest trends into account.

3) From learning objectives to exams

Naturally, the content of a course is extremely important but we believe the teaching methods employed are of equal importance. We have invested substantially in developing appropriate learning methods.

The content of the course is laid down in well-defined learning objectives in the Body of Knowledge for each separate course. Starting point was to classify the learning objectives according to the six different levels of knowledge complexity (Bloom’s taxonomy).

1)   Memorise
2)   Understand
3)   Apply
4)   Analyse
5)   Evaluate
6)   Create

Using a pedagogical matrix developed especially for The Lean Six Sigma Company, the learning objectives and corresponding knowledge complexity were translated into specific teaching methods.

As a result, depending on the subject matter, different teaching methods will be employed. This leads to interactive course days full of examples and practical exercises rather than a dry and lengthy powerpoint lecture.

4) Focus on practical applicability

It is our mission statement Lean Six Sigma professionals we have certified can make a valuable contribution to continuous improvement initiatives upon passing their exam. 

Focus is on being able to ask the right questions and find the right tools required to provide the answers. The ability to apply Lean Six Sigma tools in practice is what we focus on, without losing sight of the theory behind Lean Six Sigma methods and tools. 

We are proud of many of our certified Lean Six Sigma professionals who have been able to make a substantial impact either academically or in their working environment.



Our courses follow this standard and adhere to the competencies described therein.

With its origins dating back to the 80’s, Lean Six Sigma is truly a well proven and globally recognised methodology in process improvement.

Nevertheless, there was often some ambiguity surrounding the qualifications in Six Sigma, Lean and Lean Six Sigma.

For example, if an organisation advertised for a Lean Six Sigma Black Belt, how could they be sure of the level of ability of a ‘Black Belt’? If a supplier said it had deployed Six Sigma or Lean, how could a customer be sure of their real capabilities?

It is exactly for this reason ‘The International Organization for Standardization’ (ISO) defined a universal standard for Lean Six Sigma in ISO 18404.

This International Standard for Lean Six Sigma sets out to clarify the required competencies for personnel and organisations in Six Sigma, Lean and ‘Lean & Six Sigma’. In doing so, it has created clarity for what third parties can expect from Lean Six Sigma professionals.

As our courses adhere to this international standard, the company looking for a Black Belt in the example above, can now be sure what competencies to expect from a Lean Six Sigma Black  Belt certified by The Lean Six Sigma Company.

The Lean Six Sigma Company courses adhere to the ISO18404 standard which defines the competencies for the following Lean Six Sigma professionals:

Our certification criteria are directly derived from the ISO standard. Participants who completed the course, fulfill internationally recognised and objective requirements (ISO18404), which may be expected from Lean Six Sigma professionals.

Mischa van Aalten   /   CEO of The Lean Six Sigma Company Group


Companies we assisted with their Lean Six Sigma ambition

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Wo is The Lean Six Sigma Company?

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