This book gathers selected peer-reviewed papers presented at the 6th European Lean Educator Conference (ELEC), held in Milan, Italy, on November 11-13, 2019. The conference topics include the following: lean trainings in university and industry collaborations; lean product and process development; lean and people empowerment; emerging contexts for lean applications; measuring lean performance; lean, green and circular; continuous improvement initiatives; lean thinking in practice; organizational culture in lean journeys; and innovative training approaches to teaching lean management. The contributions explore the latest academic and industrial findings on and advances in lean education, and identify innovative methods that allow lean thinking benefits to be achieved in practice. As such, the book presents the outcomes of a fruitful exchange between academia and industry designed to help train the next generation of lean educators.