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A Master Black Belt (aka a Coach) is the highest level of training for a Six Sigma practitioner.

Master Black Belts not only guide improvement teams, but are responsible for identifying improvement projects.

For a better understanding of the Master Black Belt and an overview of Lean Six Sigma, check out our Free Lean Six Sigma Yellow Belt Training, Green Belt Training or Lean Training.

Elisabeth Swan

Elisabeth is a Managing Partner at, the co-author of The Problem-Solver’s Toolkit and co-host of the Just-in-Time Cafe. For over 25 years, she's helped leading organizations like Amazon, Charles Schwab and Starwood Hotels & Resorts build problem-solving muscles with Lean Six Sigma to achieve their goals.