This study aims to apply lean management tools to identify types of waste existing in Tay Do University, thereby proposing action plans to save costs and improve working efficiency. The convenience sampling was used to interview 172 lecturers and employees of Tay Do University. The analysis results have shown that there are ten types of waste. They are facility and equipment waste, discrete information, not exploiting the creativity of employees, time waste, defect, excess of inventory, over-processing, labor waste, excess of inputs, and excess of operation. Based on the research results, the action plan is proposed by applying the 5S model for tangible waste (facility and equipment waste) and applying Kaizen - Continuous improvement for intangible waste (not exploiting the creativity of employees, discrete information, etc.).