Company X, an Indonesian shoe manufacturer, encountered significant challenges in meeting production targets and maintaining quality standards from July to December 2021, with defect rates surpassing 0.1%. This study aims to enhance shoe production by applying a sustainable lean production approach. By employing Process Activity Mapping and Sustainable Value Stream Mapping, the analysis identified four significant types of waste: defects, waiting, transportation, and excessive motion. The initial Process Cycle Efficiency of 42% is projected to improve to 53% following the proposed interventions. Additionally, the effort required to implement sustainable practices measured in the Sustainability Index was initially calculated at 125.88% and is expected to improve to 98.87% with the recommended improvements. Critical proposed solutions include Failure Mode and Effects Analysis, the introduction of machine checklist sheets, auxiliary tools, operator training, material handling modifications, process tool redesign, eliminating non-value-added activities, and implementation of the 6R framework. These solutions are designed to enhance efficiency, reduce waste, and support Company X’s sustainability objectives.