In a hospital setting, the supply and utilisation of oxygen are crucial for high-quality healthcare. This quality improvement project aimed to increase the rate of timely and safe oxygen delivery from 30% to 75% at Wallaga University Comprehensive Specialized Hospital from 1 January to 30 June 2024.Using the Plan-Do-Study-Act (PDSA) cycle, the project team identified root causes through fishbone and driver diagrams. Key interventions included staff orientation on safe handling of oxygen devices, clear job descriptions for compliance, improved handover processes between shifts, regular maintenance and inventory checks, increasing the number of oxygen cylinders, using hospital vehicles for transport and establishing a communication system with suppliers for timely requests.Results showed that the inventory of regular oxygen delivery devices improved to 76%, with equipment checks conducted 65% of the time. Emergency preparedness reached 20%, and onsite training for staff achieved 75%. Oxygen usage monitoring was nearly perfect at 99%, with delivery times reduced to 1 day for 70% of orders. A standard protocol for oxygen supply and use was established, resulting in a significant increase in timely and safe oxygen delivery from 30% to 75%.This project effectively optimised oxygen supply management, highlighting the importance of proactive management, communication and continuous monitoring in building a reliable oxygen therapy service. Improvements in inventory management and delivery efficiency were facilitated by a dedicated dashboard, standardised operating procedures and comprehensive staff training.