Despite economic difficulties, global warming, and the ongoing recovery from the pandemic, the hospitality industry, a key player in the global economy, is under more urgency to adopt sustainable practices. This chapter examines 'Lean Hospitality,' an approach to the hospitality industry that borrows lean concepts from manufacturing operations to strengthen efficiency, reduce waste, and satisfy customers more. It examines how these concepts have changed and how they manage different kinds of waste, such as solids, liquids, gases, food choices, and potentially hazardous materials. The 5S Lean Philosophy, Value Stream Mapping, Standardized Work, and Poka-Yoke are some of the methodologies studied to see how they might promote operational excellence and continuous improvement, offering a promising future for the industry. Examples of real-world advantages and disadvantages are provided through case studies, including the Ritz-Carlton in Riyadh's effective lean implementation.