The MDX-0003 Gundam Schwarzette (ガンダム・シュバルゼッテ?) is a mobile suit introduced in Mobile Suit Gundam the Witch from Mercury. It is piloted by Lauda Neill.

A mobile suit utilizing the "GUND FORMAT" technology provided by Prospera Mercury. The Schwarzette is a next-generation concept model, developed as a successor to the MD-0064 Darilbalde. The intention was to create a mobile suit with greater flexibility, adaptability, and mobility than the Darilbalde, by further enhancing the AI control system. However, due to technical setbacks surrounding the AI control system, development was halted for a long period of time. The utilization of "GUND FORMAT" technology allowed development on the Schwarzette to resume, transforming it into a Gundam.