This research is an application of supply chain management to develop the business supplier. The objective is share knowledge of Lean to supplier for development in their factory and increase delivery performance. The current sample factory is use Lean manufacturing in consideration of Just In Time (JIT). A lot of supplier that caused the problem to delivery delay, delivery doesn’t match purchasing order (PO) and no document with their goods. That result are can’t produce needed, time needed, amount needed and missed delivery schedule to customer. Of such problems has established a project supplier development by share knowledge of Lean, training, join improvement, consultant and audit. The study result of supplier development by share knowledge of Lean can increased the delivery performance 11.46 %.