Lean Circularity is a management framework that helps small-to-medium enterprises (SMEs) adopt the circular economy by integrating circular principles directly into existing operational routines, like Lean Thinking. This practical, 5-step roadmap uses visual tools to redefine waste as a source of value, making sustainability scalable and economically viable. The core sustainability value is embedding environmental responsibility upstream, reducing material and energy waste at the source while boosting economic performance.